What are some evidences that support evolution?
some evidences that support evolution are: anatomy, molecular biology, biogeography, fossils, & direct observation. Genes, which are passed from parent to kid during reproduction, express themselves in these traits.
Evolution is the gradual change in the hereditary characteristics of biological populations over many generations. Genetic recombination and mutation are the usual causes of variation within a population. Genetic drift and natural selection, two evolutionary processes that might lead to particular traits becoming more or less dominant in a population, are likely to occur in this variation. This is how evolution works. Heritable traits emerge over multiple generations in response to shifting evolutionary factors that determine whether a trait is prevalent or rare within a population.
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describe how the respiratory areas maintain a normal breathing pattern
The respiratory system is responsible for maintaining a normal breathing pattern by bringing oxygen into the body and removing carbon dioxide. This process is controlled by the brainstem.
How to describe the respiration?The brainstem sends signals to the muscles of respiration, including the diaphragm and the intercostal muscles. The diaphragm is the main muscle used for breathing and contracts during inhalation, causing the lungs to expand and fill with air.
The intercostal muscles, located between the ribs, also contract during inhalation to lift the ribcage and increase the volume of the thoracic cavity. During exhalation, the diaphragm and intercostal muscles relax, and the lungs deflate, pushing air out of the body. The rate and depth of breathing are also regulated by a complex network of nerve cells in the brainstem that respond to changes in blood oxygen and carbon dioxide levels, as well as to other physiological and psychological factors.
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What are the two bodies of bicameral legislature?
A two-chamber legislature. a legislative bodies with two chambers or components. the bicameral legislature made up of the House of Congress and the Senate.
Two chambers share legislative authority in a bicameral legislature or legislature. Around 80 body nations in the planet have bicameral legislatures. Generally speaking, bicameralism is more prevalent bodies in federal, big, presidential governments, whereas unicameralism is more prevalent in unitary, small, legislative states. In the United States, bicameral legislatures make up the majority of state and bicameral legislatures. That is, there are two distinct bodies that make up each legislative. These two organizations are separate, autonomous entities made up of delegates who frequently hold varying terms and convene bodies in different chambers.
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how do microorganisms play a role in decomposition
Answer:
Bacteria and other microbes play an important role in the environment that is of decomposers which act in the last stage of the food chain. These microorganisms like bacteria cause the breakdown of energy-rich organic compounds. These compounds come from decaying matter of plants such as leaves or animals waste products and dead bodies.
How does Mendelian genetics apply to humans?
Mendelian inheritance is the term used to describe how qualities that are regulated by a single gene with two alleles, one of which may be dominant to the other, are passed down from parent to child. Even though just a few human features are governed by a single gene with two alleles, they provide a solid foundation for learning about human heredity.
He came to the conclusion that each parent transmits a pair of distinct genes to their offspring. Mendel studied how parental genes diverged and whether they manifested in the offspring as dominant or recessive traits. He was familiar with the mathematical traditions that were passed down from one generation to the next. Mendel's approach created a genetics template that is still employed today for gene discovery and comprehending the genetic characteristics of inheritance.
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‼️‼️Help me out pls‼️‼️
Describe one human impact that is harmful to the environment AND one that is beneficial. Describe how each of these actions impacts biodiversity.
Answer:
one thing that is harmful is pollution. it kills lots of sea life and harming out air. a way we can pollute in a helpful way is to only throw things on the ground that is biodegradable and not plastic
Which describes a common pathway of nerve impulses through the divisions of the nervous system?
Answer:
Sensory Neurons
Explanation:
Can someone please answer these for me
Answer:
1. genotype of female: Bb
a. genotype of male: bb
b. white is dominant
c. female phenotype: white
male phenotype: black
Elements, carbon, hydrogen and oxygen can be found in which macromolecule(s)?
O Protein
O Lipids
O Carbohydrates
O Nucleic Acids
O All of the above
O Proteins and Lipids only
O Carbohydrates and Nucleic Acids only
All of the above
Carbohydrates and lipids contain carbon,hydrogen, and oxygen. Protein also contains all of the above elements, including nitrogen. Nucleic acid contains the elements present in protein, including phosphorus. So basically, all the macro molecules have the 3 elements.
An eagle sees a mice on the ground and then swoops down to catch it describe the events that occurred in the nervous system as it completes this activity
When the eagle saw the mouse, it got exited that he was finally going to have dinner today.
The event that occur is that when the eagle saw the mice, using it nervous system detect the signal,then send the signal to the brain, the brain then interpret it as food , then the eagle catch it and eat it.
What is nervous system?Nervous system is the system in the body that comprises of brain, spinal cords and nerves which detect electrical impulses and send the signal to the brain which then interpret the signals into information and then the body respond base on the interpretation.
Therefore, The event that occur is that when the eagle saw the mice, using it nervous system detect the signal,then send the signal to the brain, the brain then interpret it as food , then the eagle catch it and eat it.
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Oxpecker birds eat ticks and other
parasites that live on the skin of
rhinoceroses. This is an example of
Answer:
mutualistic relationship
Explanation:
In what organisms does alcoholic fermentation take place?
A. viruses
B. fruit flies
C. yeast and some bacteria
D.plants
Answer:
Yeast and some bacteria.
Explanation:
My sister used to make homeade kombucha, which is a tea/drink made with bacteria that grows over time. it is indeed made with alcohol, but keep in mind that yeast is a living organism, and it is in some alcohols like wine and beer.
What is insertion and deletion called?
An insertion and deletion is called as a frameshift mutation .
An insertion is a point mutation in which one or more base pairs is added to a DNA sequence. Point mutations is further divided into silent mutations, missense mutations, and nonsense mutations.
Frameshift mutation is considered as a genetic mutation caused by a deletion or insertion in a DNA sequence. This kind of mutation shifts the way the sequence is read. diseases like cystic fibrosis is a result of frameshift mutation that alters the CFTR gene. The harshness of frameshift mutation is reliant on the number of nucleotides and the position of insertion of nucleotides.
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please help me, I'm from Vietnam you can translate
Answer:
What does it say? I can't read it well
Explanation:
Based on the movie( Food Inc), what are examples of policies that have been proposed as ways of dealing with social
changes resulting from new technologies, such as genetically engineered plants and animals.
Answer:
Food, Inc. Summary
If you aren’t completely familiar with what it is, Food, Inc was created by documentary filmmaker Robert Kenner and narrated by Eric Schlosser (Fast Food Nation), and also features commentary from Michael Pollan (The Omnivore’s Dilemma).
It lifts the veil on how the nation’s food industry has been consumed by corporations and how that impacts the farms where our food comes from, the supermarkets where we buy our food, and the restaurants where we eat that food. It tackles the FDA, food safety, food production, large-scale animal processing plants, and other food matters. If you are at all concerned or curious about the state of food supply in America, you should watch Food, Inc.
The Key Takeaways from the Movie
Supermarkets and Corn
The tomatoes you buy in the grocery store are picked when green and then ripened with ethylene gas
The food industry doesn’t want you to know the truth about what you are eating because if you did you might not eat it—it is a world deliberately hidden from us
Most people have no idea where their food comes from (do you?)
The fact that people need to write a book (and a blog!) telling people where their food comes from shows how far removed we are
The average grocery store has 47,000 products which makes it look like there is a large variety of choices—but it is an illusion—there are only a handful of corporations (like Monsanto, Tyson, and Perdue for example) and a few major crops involved
So much of the processed food is just clever rearrangements of corn (here are just a few examples of the additives that are derived from corn: cellulose, saccharin, polydextrose, xanthan gum, maltodextrin, and my favorite—ha ha ha—high fructose corn syrup)
30% of our land base in the US is used to grow corn because thanks to government policy farmers are paid to overproduce this easy-to-store crop
Farmers are producing so much corn that food scientists had to come up with uses for it—just like some of the additives listed above
Food scientists have also spent a lot of time reengineering our foods—so they last longer on grocery store shelves and don’t get stale
At the supermarket, candy, chips, and soda are all cheaper than produce
A double-cheeseburger from McDonald’s is 99 cents and you can’t even get a head of broccoli for that price
Those snack calories are cheaper because the commodity crops like corn, wheat, and soybeans are heavily subsidized
You start feeding corn to cows, E. Coli evolves and a certain mutation occurs which is very a harmful bacteria
Animals at factory farms stand ankle deep in their manure all day long so if one cow has E. Coli others can get it too
At a slaughterhouse their hides are caked with manure and if you are slaughtering 400 cows per hour how do you keep it from spreading?
So these harmful new strains of e Coli, that didn’t use to be in the world, are now a problem
E. Coli is even in spinach and apple juice because of the runoff from factory farms
It doesn’t help that the Chief of Staff for the USDA was a former lobbyist for the beef industry
Regulatory agencies are being controlled by the very companies they are supposed to be scrutinizing
There has always been food poisoning, but food is not getting safer it is becoming more contaminated because with the bigger factories it spreads the problem far and wide
There are only 13 slaughterhouses for the majority of beef in all the US
Ground beef from the grocery store has thousands of different cows mixed up in it so the chance of one of those cows in your meat having a disease is increased
After eating hamburger contaminated with E. Coli 0157:H7 a woman’s 2-year-old son went from a perfectly healthy boy to being dead in 12 days
In the 90’s some industrial meat factories were tested for E. Coli 0157:H7 and if they failed they were supposed to be shut down—but there was not enough authority to close the contaminated plants
Some companies are now using a hamburger meat filler cleansed with ammonia hydroxide to help kill E. Coli (mmm…that sounds tasty)
Which of the following is driven by
energy from gravity?
A. Precipitation
B. Evaporation
C. Condensation
D. Crystallization
It is precipitation that is caused by the energy driven from gravity. The correct answer is option A.
What is crystallization ?It is making up of crystals that is the hardened structures that may or may not have the definite structures and shapes from the liquid.
From the clouds under the impact of gravity the water falls down and flow downward towards the shed and flow in downward direction. Energy from the sun and the water cycles continue these cycles.
Precipitation comes up when the water gets condensed in the clouds and the water gets flown away from the clouds when evaporation. when the drops are heavy and they fall on Earth in the downward direction.
Precipitation is causing the condensation of clouds and the latter later forms the clouds via the process of precipitation of it falls down.
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Plz help , trying to fix grade
Why do gametes have half a set of DNA? What would happen if they had afull set of DNA? Explain your answer.
Answer:
What would happen if gametes had a full set of DNA? The number of DNA strands would double with each generation. One gamete cell divides into four cells, but each resulting cell has half the amount of DNA as compared to the original cell. Body cell mitosis
Explanation:
Can any body help me out please:) thank you!
Answer:
All answers are in the image
Which of the following is a cause of the ocean levels periodically rising and then falling?
A The slight tilt of the Moon
B The force of gravity from the Moon
The convection within Earth's mantle
The revolution of Earth around the Sun.
Answer: B
Explanation:
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Why do whales need oxygen?
Whales need oxygen for respiration processes because they do not have gills, and whales are unable to breathe oxygen that is dissolved in water.
The lack of gills, which prevent whales from breathing oxygen dissolved in water, is the most obvious distinction between whales and other fish. Instead, they have lungs, which means that whenever they want to breathe air, they have to come to the surface.
They can stay underwater for hours at a time because they have a very efficient respiratory system that allows their lungs to get the most out of each breath. To put things in perspective, when we are at rest, humans breathe about 12 to 20 times per minute, but they only take in 5% of the oxygen in a single breath. This is in contrast to a whale, which can absorb up to 90% of the oxygen it breathes. This indicates that a whale takes in significantly more oxygen in a single breath than a human does.
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The sequence of one strand of DNA is ACCTGC. What is the sequence of the complimentary strand of DNA
Theobroma cacao (cacao) is the tree that produces seeds that are turned into chocolate. These trees provide many poor people in the tropics with some cash income. However, these farmers face many obstacles to production of their crop, including temperature and rainfall changes caused by atmospheric CO2 increases, and many diseases and pests. Analysis of the cacao genome showed that there is some (but not a lot) of genetic variation in the 10 major varieties. Which of the following strategies would be most useful in the long term in reducing pressures faced by cacao farmers? Select one:
A. Fertilize the trees in closely spaced areas and add fungicides and pesticides to eliminate pests.
B. Plant more trees in the temperate zone.
C. Plant trees farther apart so that disease transmission rates from one tree to the next will be lower.
D. Crossbreed cacao strains that produce high-quality cacao beans and ones resistant to a disease. Clear my choice
Answer:
B. Plant more trees in the temperate zone.
Explanation:
The presence of abundant cabondioxide (CO2) in the atmosphere is as result of a decrease in plants populations.
plants makes use of CO2 in photosynthesis a process in which green plants manufacture their food Abundance of trees helps to clear the environment from excess CO2 through their utilization leading to a fresh and enabling environment.
Hence their is need to plant more trees in temperate and avoid deforestation of trees to enable plant make of CO2 and reduced the adverse effect of its excess in the environment.
which biome is characterized by trees that have a variable canopy that is, leaves part of the year and no leaves part of the year?
Answer:
chaparral
Explanation:
Chaparral biome is the broad-leaved evergreen scrub forest (sclerophyllous or thick leaved shrubs and small trees) found in Mediterranean and Pacific coast of several countries with winter rains and dry summer.
Both plants and animals are adapted to frequent and long periods of
drought. Bush fires are common. Several plants are fire resistant. Plants include Sage, Arctostaphylos,
Adenostemma and Coenothus. Trees of
Oak and Eucalyptus occur at places.
Fauna consists of drought
adapted animals like rabbits, deer, rats, snakes, lizard and birds.
which are renewable and which are non renewable
Answer:
Renewable: Water, Trees, Wind, Ice Cubes, Sunlight, Salt Water, Lumber, Paper
Non-renewable: Coal, Oil, Plastics, Bauxite (Aluminum), Natural Gas, Gold Jewelry, Iron, Soda Can
Best Question/Problem for Hot and cold compress
helpp mee plsss Thank youu
Im guessing any is fine, as long as its acceptable.
"What are the benefits and potential risks of using hot and cold compresses, and when is it appropriate to use each type?"
What are the conclusion from Mendelian experiment?
Mendel gathered his data for tens of thousands of plants before coming to the conclusion that the traits might be divided into expressed and latent features. These traits were described by him as being dominant and recessive, respectively. In a hybridization, dominant features are those that are passed on unaltered.
The three laws of dominance, independent assortment, and segregation serve as a summary of all the findings of Mendel's experiment. He proposed that each gene be passed down to the organisms twice, once from each parent. In their gametes, organisms only share one copy of each gene. In his opinion, traits are discretely inherited from each parent, one at a time.
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Many lethal genetic disorders such as CF, Huntington’s, sickle cell anemia, Tay Sach’s, etc., persist in the human genome. How have these genes survived so many millennia of evolution (why didn’t they die out)?
They've been under the purview of balancing selection. This type of selection occurs when two alleles – one being the harmful variant and the other being the beneficial variant – both confer some sort of benefit in the presence of each other. This can work in two ways. Sometimes the balance of deadly and beneficial alleles can create a balance in the population, allowing for genes to persist over time. In other cases, the lethal genes can be beneficial if there is an environmental change and the deadly gene can offer protection from the new environment. Both of these scenarios create a balance of selection, allowing for the persistence of the gene over time. In some cases, the lethal genes are essential for the maintenance of certain gene complexes and, if lost, could result in decreased fitness. This type of selection is known as evolutionary pressure and it can also contribute to the longevity of certain genes. A third possibility is that some of the genes simply survive due to random genetic drift.
How do cancer cells differ from other cells
Answer:
In contrast to normal cells, cancer cells often exhibit much more variability in cell size—some are larger than normal and some are smaller than normal. In addition, cancer cells often have an abnormal shape, both of the cell, and of the nucleus (the “brain” of the cell.)
Answer:
Cancer cells grow in the absence of signals telling them to grow. Normal cells only grow when they receive such signals. Cancer cells divide in an uncontrolled manner, while normal cells divide in a controlled manner. Cancer cells do not show contact inhibition, while normal cells do. The lifespan of cancer cells is indefinite, while normal cells have definite lifespans.
Explanation:
if a cell contained three pairs of homologoues (n=3, 2n=6) how many configurations are possible?
Twice the number of chromosomes in a haploid cell (n).
How many chromosomal combinations are feasible in the gametes of a 2n 6 cell?The number of potential chromosomal pairings in gametes is 2n (two to the ‘n’ power, where ‘n’ is the number of chromosomes in the haploid set). So, for 2n = 4, n = 2, and gamete number = 22 = 4, the answer is 4. Furthermore, for 2n = 6, n = 3, and gamete number = 23, the answer is 8.
As a result, an organism with cells 2n=6 is diploid and contains 6 chromosomes in total. In other words, this creature contains three chromosomal pairs. We will use the formula nCr = n! / r! * (n – r)! to compute combinations, where n represents the total number of things and r indicates the number of items picked at a time.
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