The reasons for the lack supply of clean drinking water is: water pollution, increased demand for water, climate changes, mismanagement of water resources, as well as poverty.
Water pollution is defined as the contamination of water with harmful substances and toxic chemicals that make it unfit for use. The presence of harmful microorganisms also makes the water polluted. The main reason for the contamination of water is the human activities.
Climate change refers to the change in the temperature and weather pattern of the environment from the normal. These changes are long-term. These changes can be normal, however, currently the human activities are the main reason for climate changes.
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Each of the animal cells shown below is in a different stage of mitosis. Select the cell that is currently in metaphase.
Answer:
The first one is in metaphase
Explanation:
Answer:
Picture !!
Explanation:
I took the test
What are the three functions of cilia?
The major functions of the cilia are locomotion, attachment, feeding and sensation.
About CiliaThe ciliary apparatus is connected to cell cycle progression and proliferation, and cilia play a vital part in human and animal development and in everyday life.
The length of a single cilium is 1-10 micrometres and width is less than 1 micrometre.
Cilia are broadly divided into two types. They function separately and sometimes together:
'Motile' (or moving) cilia are found in the lungs, respiratory tract and middle ear. These cilia have a rhythmic waving or beating motion. They work, for instance, to keep the airways clear of mucus and dirt, allowing us to breathe easily and without irritation. They also help propel sperm.
Primary cilia appear typically as single appendages microtubules on the apical surface of cells and lack the central pair of microtubules (e.g. in kidney tubules).
In the kidney, for example, cilia bend with urine flow and send a signal to alert the cells that there is a flow of urine.
In the eye, non-motile cilia are found inside the light-sensitive cells (photoreceptors) of the retina. These cilia act like microscopic train-tracks, and allow the transport of vital molecules from one end of the photoreceptor to the other.
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Which of the following does not contribute to bacteria's ability to evolve rapidly? A)Sexual reproduction. B)Genetic recombination. C)Mutation
Answer: A) Sexual reproduction
Explanation:
Bacteria cannot reproduce sexually. They instead exchange genetic information.
Glands that secrete hormones into spaces that the hormones eventually diffuse into the blood stream from are called:
Glands that secrete hormones into spaces that the hormones eventually diffuse into the blood stream from are called endocrine cells.
Endocrine cells launch hormones into the intercellular spaces, from which they diffuse unexpectedly into surrounding blood vessels and from there in the course of the body. Micrograph (b) of the anterior pituitary gland indicates the standard capabilities of endocrine glands. On the opposite hand, endocrine glands secrete their materials at once into your bloodstream. They're referred to as ductless glands. Endocrine glands are a part of your endocrine system, and that they secrete hormones. Examples of endocrine glands encompass your pituitary gland, thyroid gland and adrenal glands. Endocrine glands launch hormones into the bloodstream. This shall we the hormones tour to cells in different elements of the body. The endocrine hormones assist manipulate mood, boom and development, the manner our organs work, metabolism, and reproduction.
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match the organic mocule/compoound with the correct testing agent.
Answer:
simple carbohydrate
Explanation:
help me please this is due in 30 minutes
Answer:
moth is herbivore because they only eat plants
mice is a omnivore because they eat both plants and animals
and producer is corn because producers are plants because they make their own food through Photosynthesis
and sorry I don't know the other one
the producer in the food chain is corn.
Organisms are classified into kingdoms primarily on the basis of A) behavior B) structure C) size D) habitat
Organisms are classified into kingdoms based on a variety of factors, but primarily on the basis of structure, behavior, size, and habitat. So all the given options are correct.
First and foremost, structure is the most important factor in determining the kingdom to which an organism belongs. Morphology, or the physical structure of an organism, plays a vital role in the classification process. For example, the vast majority of animals are classified as members of the Animalia kingdom, due to their possession of a backbone and other characteristics that distinguish them from other organisms.
Behavior is also used as a criterion for kingdom classification. Organisms are grouped into different kingdoms based on the behaviors they exhibit, such as their mating habits, feeding behavior, and even their social organization. For instance, many fish, birds, and mammals are grouped together in the Animalia kingdom due to their similar behaviors.
Size is another factor that is taken into consideration when classifying organisms into kingdoms. Generally, larger organisms are grouped in the Animalia kingdom, while smaller organisms, such as bacteria and protists, are placed in the Protista kingdom.
Lastly, the habitat of an organism is also used to assign it to a certain kingdom. Different kingdoms are characterized by certain habitats, such as the Animalia kingdom is associated with land-based habitats. Thus, when an organism is found to live in a certain habitat, it is generally assigned to the kingdom associated with that habitat.
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Meiosis II must take place because each of our new cells still has too much _________.
What do you think is the importance of food labels with nutrition?
Explanation:
It's importance is stating the nutritional value of the product and letting consumers know about any possible allergens
What is a vector
A quantity that has both mass and speed.
A quantity that has both size and direction. Help asap
Explanation:
As I think Option 2 is the correct one.
Frameshift mutations can be very severe. What is one reason why they are often so serious?
A) When a frameshift mutation occurs, it causes changes in many bases downstream and can affect many of the amino acids in the protein.
B) Frameshift mutations always occur in the regulatory region, so they cause a gene to be turned off and then the protein is not produced at all.
C) When a frameshift mutation occurs, it causes changes in many bases upstream and can affect many of the amino acids in the protein.
D) When a frameshift mutation occurs, it causes transition mutations to occur. These are particularly severe.
Reason behind Frameshift mutations are severe because A) When a frameshift mutation occurs, it causes changes in many bases downstream and can affect many of the amino acids in the protein.So,correct option is A.
Fundamentally, a frameshift mutations causes changes in the hereditary material, codons, and proteins, which can prompt numerous difficulties and issues, some of which are the Tay-Sachs sickness, however it can likewise make an individual be more inclined to specific malignant growths.
A frameshift mutations (likewise called an outlining mistake or a perusing outline shift) is a hereditary change brought about by indels (additions or cancellations) of various nucleotides in a DNA succession that isn't distinct by three. Because of the trio idea of quality articulation by codons, the inclusion or erasure can change the understanding edge (the gathering of the codons), bringing about something else altogether from the first. The previous in the succession the erasure or addition happens, the more changed the protein. A frameshift mutation isn't equivalent to a solitary nucleotide polymorphism in which a nucleotide is supplanted, as opposed to embedded or erased.
Hence,correct option is A.
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In term of characteristics of a living organism
What would it be if headlight that switch on automatically in the dark?
Answer:
A headlamp is a lamp attached to the front of a vehicle to illuminate the road ahead. Headlamps are also often called headlights, but in the most precise usage, headlamp is the term
Explanation:
I hope that helps
Answer: Well obviously there will be a light you would be seeing, and I’m pretty sure the headlight turned on for a reason which is: there might be something in front of the car that the headlight detected. Or the headlight wants to make sure you see where you are going.
Explanation: I did a brain proccess and thought with my head and got this I don’t know what any other reason why a headlight would turn on automatically. I hope this helped :)
Drag the titles to the correct boxes to complete the pairs Identify the types of inhertiance based on the expression of alleles in the organism
Complete question:
Drag the tiles to the correct boxes to complete the pairs. Identify the types of inheritance based on the expression of alleles in the organism. dominant recessive multiple presences of many alleles for the trait to be expressed  the presence of two alleles for the trait to be expressed  presence of a single allele for the trait to be expressed 
Answer:
multiplerecessivedominantExplanation:
Autosomal dominant inheritance characterizes because the dominant allele completely hides the expression of the recessive allele. Even when both dominant and recessive alleles are present in the genotype, only the dominant trait will be expressed. Only one dominant allele is enough to express the dominant phenotype. Autosomal recessive inheritance characterizes by the expression of the recessive trait. Two copies of these alleles are needed to express the recessive phenotype and no dominant alleles. Polygenic heritability occurs when a trait is due to the action of multiple genes that can also have more than two alleles. This can cause many different combinations that are the reason for genotypic graduation.
Help? I don't understand
Answer:
Secondary succession is more common and usually occurs faster than primary succession because the substrate is already present.
Explanation:
Hope it helped:)
A gene contains 4 exons and 3 introns. Each exon may, or may not be present in the corresponding mRNA. How many different proteins can this gene code for:
There are three introns A molecule of pre-mRNA in a eukaryotic cell has four exons and three introns.
The number and size of introns differ widely. The mammalian DHFR gene comprises 6 exons totaling around 2000 nucleotides, yet the gene is 31,000 bases long. Similarly, alpha-collagen contains 50 exons ranging from 45-249 bases, and the gene is approximately 40,000 bases long.
Exons and introns are present in the earliest messenger RNA products when genes are transcribed. However, introns are deleted during the splicing process, leaving just exons in the final mRNA and utilized to determine which proteins are generated.
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Which of the following is the correlation coefficient a researcher would most likely obtain between scores on a measure of exposure to media violence and scores on a measure of aggressive behavior?
- 0.80
- 0.00
- 0.30
- 1.00
A moderate correlation between exposure to media violence and aggressive behavior, with correlation coefficients often falling between 0.30 and 0.80. 0.80 is correct .
It is likely that a researcher would obtain a correlation coefficient between 0.30 and 0.80 between scores on a measure of exposure to media violence and scores on a measure of aggressive behavior. This is because research has consistently found a moderate correlation between exposure to media violence and aggressive behavior. However, it's important to note that correlation coefficients can vary depending on the specific measures used and the population being studied. A correlation coefficient of 0.00 would indicate no correlation between the two variables, while a correlation coefficient of 1.00 would indicate a perfect positive correlation.
Therefore, 0.80 would be the most likely correlation coefficient obtained by researcher.
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What happens if a cell gets too large for the amount of DNA it has?
The cell is the fundamental unit of life and its structure is highly dependent on the amount of DNA it contains. As such, if a cell gets too large for the amount of DNA it has, it can lead to a range of problems for the cell. This is because the amount of DNA a cell contains determines its size, shape, and the number of processes it can carry out.
One consequence of having too little DNA for a large cell is that it will not be able to divide properly during cellular reproduction. This is because the DNA is responsible for providing instructions to the cell about how to divide and replicate itself, and if there is not enough DNA present, the cell will not be able to divide correctly. As a result, the cell may become deformed or contain abnormal structures or functions.
In addition, when the cell is too large for the amount of DNA it has, it often results in a decrease in the amount of proteins it produces. This is because the DNA is responsible for providing instructions to the cell on how to produce proteins, which are essential for cell growth and development. Without enough DNA to provide these instructions, the cell cannot produce the necessary proteins and is not able to function properly.
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Que significa una celula
The ____________ (pipe/vent) is a long tube in the ground that connects the magma chamber to Earth’s surface.
The pipe is a long tube in the ground that connects the magma chamber to the Earth's surface. Magma leaves the volcano through the vent and becomes lava.
What is Magma chamber?A magma chamber is a large pool of liquid rock which is present beneath the surface of the Earth. The molten rock, or magma, in such a chamber is comparatively less dense than that of the surrounding country rocks, which produces buoyant forces on the magma that tend to drive it upwards.
The magma moves up through a pipe, a long tube in the ground which connects the magma chamber to the Earth's surface. The pipe is the tube which connects the magma chamber to the vent. Molten rocks and gases leave the volcano through an opening called as the vent.
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an ice is put in a beaker and left in the sun for long time? Explain the process involved in the change of state
Answer:
solid will change to liquid and then gas
Explanation:
melting, evaporation
Which of the following are external regulators of the cell cycle
A. Cyclins
B. Growth factors
C. Mitotic spindles
D. Cancer cells
Answer:
B . Growth factor.
hope it is helpful to you
A condyle differs from an epicondyle in that the condyle ______. A) is often flat, whereas an epicondyle is round. B) is an attachment site for muscle
A condyle differs from an epicondyle in that the condyle helps form a joint. So the correct option is C.
Condyle and Epicondyle both refer to the part of long bones in animals. The smooth surface at the end of the bone which helps in the formation of a joint is called condyle however,
The Epicondyle is a rounded protuberance at the end of a bone which facilitates the attachment of ligaments, muscles and tendons.
Where condyle forms a smooth surface, epicondyle usually leads to rough projections.
Medial and lateral condyle are some examples for former while medial and lateral condyle of femur and humerus are some examples of epicondyle structure in bone.
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Full question: A condyle differs from an epicondyle in that the condyle ________
A) helps form a joint.
B) is a raised area above a joint.
C) is often flat, whereas an epicondyle is round. D) is an attachment site for muscles.
what are the agents of pollination?
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Three major agents of pollination are:-
1. Insect
2. Wind
3. Water
Thanks Hope it helps.Why aren't human populations evolving to produce immune systems that are able to fight off MRSA and other "superbugs"?
Answer: There are genes that code for different cell receptors that detect foreign substances. And for the immune system to fight these superbugs, the genes encoding these receptors must mutate and evolve. Humans have a slow rate of evolution, slower than bacterial evolution. Then not only human genes mutate at a very slow rate, but insect genes mutate very fast and can improve their strategy to evade the immune system.
Explanation:
A mutation is a random change in the nucleotide sequence or in a gene, which produces a variation in its characteristics and which is not necessarily transmitted to the offspring. They occur spontaneously by the action of mutagens, which are physical, chemical or biological agent that changes the genetic information of an organism and thereby increases the frequency of mutations above the natural level. In multicellular organisms, mutations can only be inherited when they affect the reproductive cells, called gametes (egg and sperm) A consequence of mutations can be, for example, a genetic disease, or it can also be a favorable improvement such as being able to fight against a virus. However, even if in the short term mutations could detrimental, they are essential for our long-term existence becuase without mutations there would be no change, and without change life could not evolve.
The immune system is the body's natural defense against infections, such as bacteria and viruses. The body attacks and destroys invading infectious organisms by the coordinated action of cells and proteins. Any substance or compound produced by an organism is a potential antigen when it is recognized as foreign by the immune system of another organism, whether it is of the same or a different species. In addition, the genes code for different cell receptors that detect these foreign substances. And for the immune system to fight these superbugs, the genes encoding these receptors must mutate and evolve. But, humans have a slow rate of evolution, slower than bacterial evolution. Then not only human genes mutate at a very slow rate, but insect genes mutate very fast and can improve their strategy to evade the immune system. Therefore, the human population may not have mutations that improve the immune system to help it fight againts these superbugs.
Many centuries ago strawberries used to be smaller and less sweet. what is the name of the process responsible for the change in strawberry's traits?
What are cilia and where are they located?
Cilia are microscopic, hair-like projections found on the outside of eukaryotic cells or internal organs, and protozoans.
Several internal organs, including the lungs, trachea, and digestive system contain epithelial cells with motile cilia. They are also present on protozoans, such as paramecium, and aid in motility. In the dendritic knob of the olfactory neuron are the non-motile cilia. Cilia are structures on the surface of cells whose function it is to propel water in a specific direction relative to the cell. Like many single-celled organisms, this process can either cause the cell to move through the water or cause the water and its contents to move across the cell's surface.
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A mutation in the gene for plasmin that results in non-functional plasmin can cause: O thrombin to activate. O plasminogen to clot blood faster. O blood clots will not be dissolved. O no clotting will occur.
Blood clots may not dissolve due to plasmin gene mutations that produce inactive plasmin. Therefore, statement 3 is the chosen statement.
A zymogen that starts the fibrinolytic cascade is plasminogen. The plasminogen-to-plasmin conversion results in plasminogen activation. A proteolytic enzyme is a plasmin. It is a chemical that stimulates the breakdown of proteins made from an inert plasma precursor plasminogen. Blood clot fibrinolysis and the restoration of regular blood flow are the primary physiological functions of plasmin. In other words, it is a serine protease that dissolves fibrin blood clots. It is present in human serum.
Therefore, statement 3 is correct.
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What is the best evidence we have for evolution ?
The continuity of the fossil record from ancient to contemporary times may be the strongest fossil evidence supporting evolution.
We don't find things like mammals in strata from the Devonian, the age of fishes, or human fossils alongside dinosaur remains anywhere on Earth. Evolution that is, common descent, gradualism, species diversification, and natural selection are the five hypotheses that Darwin united. A theory is an explanation for how a natural phenomenon functions that has undergone extensive testing through observations and experiments intended to establish the validity of the explanation. In this context, evolution might be considered both reality and a theory. The fact that creatures have altered or evolved over the course of Earth's history is undeniable.
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When an individual's genotype has one normal allele and one mutant allele for a recessive phenotype (and hence, doesn't express the mutant phenotype), they are known as _____. sex-linked codominance incomplete dominanance carriers
Sex-related disorders are handed down through generations via the X or Y chromosome. The X and Y chromosomes are sex chromosomes. A heterozygous genotype is defined as an organism with one dominant allele and one recessive allele.
Dominant inheritance occurs when one parent's defective gene causes disease while the corresponding gene from the other parent is normal. The aberrant gene takes precedence.
However, in recessive inheritance, both matching genes must be faulty for illness to occur. If only one of the two genes is faulty, the illness does not arise or is mild. A carrier is someone who has one faulty gene but no symptoms. Carriers' offspring may inherit faulty genes.
Most commonly, the term "sex-linked recessive" refers to X-linked recessive.
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how can you explain that negative thinking is apart of your life
Answer:
Gün boyunca aklınıza gelen olumsuz düşüncelerin farkında olun.
Öncelikle bu olumsuz düşünceleri fark edin. Zihninize daha çok gece mi, gündüz mü, yoksa yorgun olduğunuzda mı geliyorlar? Bu olumsuz düşünceler için bir günlük tutun ve o anda nasıl bir fiziksel enerjinizin olduğunun farkına varın. Bir müddet sonra, bu şekilde olumsuz düşünme biçimlerine ne tarz olayların, hangi kişilerin ve durumların sebep olduğunu fark etmeye başlayacaksınız.
Düşüncelerinizle mücadele edin ve bu olumsuz düşüncelerinizi çürütecek gerçekleri aramaya başlayın.
Düşüncelerinizi mercek altına almaya çalışın. Eğer doğrudan olumsuz sonuçlara atlıyorsanız düşüncelerinizi mercek altına almaya çalışın. Olumsuz sonuca varmadan önce kendinize bir zaman aralığı ayırmanız, istenmeyen düşünceleri dağıtabilir. Sadece 10 dakika beklemeyi deneyin. Olumsuz düşüncelerin sizi nasıl terk ettiğini göreceksiniz.
Olumsuz düşüncelerinizin yerine geçebilecek bazı alternatif düşünceleri şu şekilde sıralayabiliriz:
Ben sürekli her şeyin kötü olacağını düşünüyorum ama aslında geleceği tahmin etmek imkânsız.
İnsanların bana nasıl karşılık vereceklerini sürekli tahmin etmeye çalışıyorum ama bunu tahmin etmek imkânsız çünkü ben insanların zihinlerini okuyamam.
Suçlayıcı düşüncelerin yerine daha yapıcı ifadeler kullanmaya çalışın. Bu yapıcı ifadelere örnek olarak şunlar verilebilir:
Olanları tahmin etmek mümkün değildi, ben elimden geleni yaptım.
Bir şeylerin bu sefer yolunda gitmemesi benim beceriksiz olduğum anlamına gelmez.
Yeni bir beceri ediniyor ya da öğrenme sürecinde bir zorlukla karşılaştığınızda, ilk etapta karşılaştığınız zorlukları başarısızlık olarak değerlendirmeyin; geçici bir aksilik olarak görün.
Hatta buradaki “başarısızlık” kelimesini “sıçrama tahtası” olarak değiştirin.
Nazik bir şekilde düşüncelerinize düzeltmeye çalışın; şunun gibi soru ve ifadeler kullanabilirsiniz: “Bugün bir problemle karşılaşmam, yarın da aynısı olacağı anlamına gelmez.”, “Neden böyle olumsuz düşünüyorum ki?”
Kendinden emin bir vücut dilinin egzersizini yapın. Rahatlamış ve farkında bir şekilde vücudunuzun açık bir duruşta olmasını sağlayın. Kendinizi sağlam, dengeli hissetmeye odaklayın ve derin ...
Explanation:
En yi eçersen evinirim