In the investigation where we combined the bath bomb with water, we saw bubbles forming but we did not see an increase in the overall
mass. This happened because....
a - In a closed system, no matter can get in or out so the mass stays the same.
b - In an open system, no matter can get in or out so the mass stays the same.
c - All matter is made of small particles that are too small to be seen.
d - Matter has mass and takes up space. (not this one)
Answer:
C all matter is made of small particles thatcare too small to be seen
Answer:
C
Explanation:
the guy above me said so
Which of the following is a biotic factor that can affect the population size of a species? Birth rate Sunlight Water Land
Answer: Birth Rate
Explanation: I got it on the test
Which of the following statements about human impact on trees is true?
a.Human activity always has a negative impact on trees.
b.All human uses of trees require destruction of the trees.
c.Human activity has had both a positive and negative impact on trees.
d.Cutting down trees is the only activity that has a negative impact on trees.
Answer:
c. Human activity has had both a positive and negative impact on trees.
Human activity can have negative impacts on trees, such as deforestation and clearcutting, but it can also have positive impacts, such as tree planting and reforestation efforts. It is not true that all human uses of trees require destruction of the trees, as humans also use trees for a variety of non-destructive purposes such as recreation, wildlife habitat, carbon sequestration, and aesthetic value. And cutting down trees is not the only activity that has a negative impact on trees, other human activities such as air pollution, soil degradation, water pollution can also have negative impacts on trees.
Which among the following is the correct sequence of prophase I of meiosis?
A.Leptotene, pachytene, zygotene, diplotene, diakinesis
B.Leptotene, diplotene, pachytene, zygotene, diakinesis
C.Leptotene, zygotene, pachytene, diplotene, diakinesis
D.Leptotene, zygotene, diakinesis, diplotene
Answer: C
Explanation: Leptoten, zygotene, pachytene, diplotene, diakinesis
Type of cell
Xylem
1.Absorption of mineral ions
2.Transport of oxygen
3.Movement of mucus
4.Protection against pathogens
5.Structural support
Answer:
xylem is for the transport of oxygen in a plant
I know this because it was in my syllabus last year
Answer:
hey dude here is your answer
What is the origin information of new species called
A. Evolution
B.Biological species
C. Natural selection
D.Specitation
I think its A but im not sure
Explanation:
. Thus, new species form when individuals from diverging populations no longer recognize one another as potential mates, or opportunities for mating become limited by differences in habitat use or reproductive schedules
What major events happen in each phase of interphase
Answer:
Explanation:
Interphase is composed of G1 phase (cell growth), followed by S phase (DNA synthesis), followed by G2 phase (cell growth). At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.
(b) How is the low power objective lens manipulated to focus a specimen for observation under a light microscope?
Answer:
The low power objective lens is manipulated by turning the focusing knob on the microscope. This moves the lens up and down to focus the specimen. The microscope should be set on the low power objective lens and the image should be brought into focus by turning the focusing knob. Once the image is in focus, the higher power objective lenses can be used to further magnify the specimen.
Which of the following statements is CORRECT concerning the concept of sex and dreams? a. Men and women typically dream about similar things. b. Men dream more each night than women. c. Research reports that men and women differ in the things they dream about. d. Women tend to dream twice as much as men.
Answer: D I believe
Explanation:
Help please?!!!???!????!??!??????????????!??!?!
Answer:
1 and 3
Explanation:
Magnetic waves always go from north to south. So judging by the arrows you can tell the left/yellow pole is the north one. And since that is the north one, the green/right one is the south pole.
What is the percentage of having tall pea plants in the offspring?
The percentage of having tall pea plants in the offspring is about 75%
A person who has two copies of the allele that codes for the dominant characteristic is said to be homozygous-dominant for that trait. This allele, which is sometimes referred to as the "dominant allele," is typically denoted by the uppercase version of the letter used for the associated recessive characteristic (such as "P" for the dominant allele producing purple flowers in pea plants). An organism's genotype is symbolized by a doubling of the trait's symbol, such as "PP," when it is homozygously dominant for that trait.
Refers to a trait that can only be seen in homozygous individuals; it is a trait that is often hidden by other inherited qualities but persists in populations of heterozygous individuals.
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Which part of the brain is represented by the highlighted area shown below? (5 points)
0 Cerebrum
Cerebellum
ОООО
O Medulla oblongata
Pons
Answer: Cerebellum
Explanation: I took the test
A tapeworm eats partially digested food in the digestive system of the host and deprives it of nutrients. What type of symbiotic relationship is this?
A. commensalism
B. competition
C. parasitism
D. predation
Answer:
C.
Explanation:
Parasites deprive their host of it's nutrients, which is what the tapeworm does as described in the paragraph.
Answer:
C. parasitism
Explanation:
Hope this helps
What can be known about Mendel's five part hypothesis it is an answer to a scientific?
Mendel established a set of five guiding principles to explain how features are passed down in pea plants, which he called his "five-part hypothesis." The following rules are there are specific "factors" that are transferred from parent to offspring and defining traits.
For each attribute, each parent gives their offspring one component. One factor will be dominant and the other will be recessive when the factors influencing a trait are distinct.
The phenotype will show the expression of the dominant factor but not the recessive factor. A child has a 50% chance of getting a particular trait from a parent.
Mendel's five-part hypothesis has been expanded upon and refined in the century and a half since his initial experiments, but the basic principles he discovered continue to form the foundation of modern genetics. Mendel's work helped establish the concept of the gene as the unit of inheritance and the idea that different versions of a gene (alleles) can result in different traits.
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A similar screening test was developed and evaluated on a similar population, and found to have a sensitivity of 38%, a specificity of 97%, with 63% positive predictive value and 91% negative predictive value. Pick the correct interpretations of these results: (Pick all answers that are true - you will get partial credit for whatever you get correct)
Students who do not genuinely have anorexia are more likely to be ruled out by this screening test than those who do.
The screening test indicates that anorexic children have a 38% chance of testing positive while anorexic students have a 97% chance of testing negative.
Those who test positive for disease have a 63% likelihood of having it, whereas those who test negative have a 91% chance of being disease-free. An unjustified fear of being overweight and a skewed body image are characteristics of anorexia.
Attempts to keep a weight below average by fasting or excessive activity are symptoms. To get back to normal weight, medical intervention could be required.
College students face a lot of pressure to be social and presentable because they are frequently in the company of people their own age. Numerous children decide when, what, and how much to eat for the first time. The two most typical eating disorders are bulimia and anorexia. Usually, eating disorders start between the ages of 18 and 21. In college, between 10 and 20% of women and 4 to 10% of males struggle with eating disorders, and the prevalence is rising.
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Sediment deposition, earthquakes, and weathering are
similar in that they
In some ways, sediment deposition, earthquakes, and weathering are all comparable in that they may all produce erosion.
The shedding of sediments by wind, water, ice, or gravity is known as sediment deposition. Weathering processes generate sediments, erosion processes degrade them, and sedimentation processes deposit them in new sites. As the wind and water slow down, the silt they were transporting falls to the ground.
Erosion is the movement of soil, silt, and rock debris caused by weathering of geological structures by wind, water, and ice. Subsidence occurs when eroded material transported by water settles out of the surface water column when the flow of water slows.
Erosion and weathering turn rocks and mountains into sediments such as sand and mud. Deposition is a kind of weathering, namely chemical weathering. As a result of the water's mild acidity, the stone progressively wears away during this procedure. These three processes all contribute to the formation of new sedimentary rock sources. Earthquakes and weathering are similar in that they can both result in
soil Erosion .
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Complete question:
Sediment, deposition, earthquakes, and weathering are similar in that they
can all change the surface of the Earth.
are all a result of weathering.
all happen quickly.
all cause erosion
Which location would energy be transferred more quickly between the atmosphere and Earth's surface, a lake where the air is 5*C or an ice sheet where the air is 5*C
10 points biology help meee
Answer:
A a sugar-phosphate backbone
Explanation:
In double- stranded DNA, the molecular double helix shape is formed by two linear sugar-phosphate backbones that run opposite each other and twist together in a helical shape, to which the CGAT are attached.
PLSS HELP ME WITH THIS IMMEDIATELY!!! ILL MARK U BRAINIEST IF U DONT LEAVE A LINK OR GUESS!!
Answer:
C
Explanation:
Due to constant erosion, it will erode and collapse from which sediments form which sink into the sea or float depending on its mass
About how often do you think eclipses happen?
Answer:
2 to 4 a year
Explanation:
Answer:
every one to two years
"Total solar eclipses occur once every one to two years but are only visible from less than half a per cent of the Earth's surface".
What conclusions can be drawn cross I and cross II? explain how the data support your conclusions for each other
Cross I and Cross II obey the law of dominance and the law of segregation, respectively, according to the mendelian pattern of inheritance.
The F1 has only shown a single dominant trait when mating with two pure breeding Geno types. By selfing two F1 parents, it was also discovered that the mono hybrid F2 ratio of 3:1 is followed by the progeny population.
The phenotype ratio of the dihybrid test cross is 1:1:1:1 or
The dihybrid test cross ratio's observed and predicted results do not significantly differ from one another.
Number of phenotypes Equals degrees of freedom -1= 4-1= 3
Critical Chi square value with 3 degrees of freedom and 5% level of the table significance is 7.82.
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Note: The missing table in the diagram is given bellow,
What is the first and the most important step in the resuscitation of this newborn?
The single most crucial and efficient phase in cardiopulmonary resuscitation of a critically ill newborn is lung ventilation. The newborn should be placed under a radiant heat source to offer warmth. The baby should then be dried off, their airway should be cleared with a bulb syringe or suction catheter if necessary, and their breathing should be stimulated.
Rescuers should make sure that aided ventilation is being administered as optimally as possible before beginning chest compressions because ventilation is the most effective intervention in neonatal resuscitation and because chest compressions are likely to compete with good ventilation. Thus successful resuscitation depends on efficient ventilation. One cannot always foresee or forecast the necessity for neonatal resuscitation at birth.
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Which of the following is an example of the cycling of matter?
A A sea star dries out when exposed to air and radiation from the sun
B Seaweed releases oxygen that a crab breathes in through its gi is.
C A wave crashes against rock on the shoreline,
D Amussel seals its shell from drying heat of the sun
Answer:
d
Explanation:
sana maka tulong
scientist have discovered several species of insect that are contain the DNA sequence ATTACGCGATC on their second chromosome what does this evidence suggest????
type of cell
Xylem
1. Absorption of mineral ions
2.Transport of oxygen
3.Movement of mucus
4.Protection against pathogens
5.Structural support
Answer:
absorption of mineral ions
Answer:
Option 1. Absorption of mineral ions
Explanation:
Classifying and Exploring Life Lesson 1. Characteristics of Life Lesson 2. Classifying Organisms Lesson 3. Identifying a Beetle Lesson 4. Exploring Life Lesson 5. Constructing a Dichotomous Key
There appear to be five different lesson topics related to studying life, its characteristics, and to classify and identify different organisms.
"Characteristics of Life," would likely cover the basic characteristics that all living things share, such as the ability to grow, reproduce, and respond to their environment.
"Classifying Organisms," would likely cover how scientists group and classify living things into different categories based on their characteristics, such as the use of taxonomy and the classification system proposed by Carl Linnaeus.
"Identifying a Beetle," would likely focus on teaching students how to identify different species of beetles by their physical characteristics, such as size, shape, and coloration.
"Exploring Life," would likely focus on introducing students to the diversity of life on Earth and the different ways in which living things interact with each other and their environment.
"Constructing a Dichotomous Key," would likely teach students how to use a dichotomous key, which is a tool that helps identify different species by asking a series of questions and narrowing down the options based on the answers.
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What can be used as evidence for evolution? (select all that apply)
A) Body parts of different species that are similar in structure and location.
B) Any common function of structures between species (i.e. birds and insects both have wings)
C) Structures in modern species that are unused and unnecessary, but were used by past species.
D) Similarities of embryos from different species.
E) Fossil records showing structures and locations of species.
Describe in detail the process of Evolution.
Answer:Evolution is a process that results in changes in the genetic material of a population over time. Evolution reflects the adaptations of organisms to their changing environments and can result in altered genes, novel traits, and new species. ... An example of macroevolution is the evolution of a new species.
Explanation:May i have bonus?
What do clams need to survive?
Clams need aquarium pH: 7.0 – 8.0 and water temperature: 70 – 80 degrees Fahrenheit to survive.
With aquarium pH, some potterers suggest that lower terrarium pH in the upper 6’s may also be respectable to Freshwater Bones. Others try to keep terrarium pH above 7. Water on the acidic side may not be stylish for the bone ’s shell over the long term. Water of the aquarium should be well oxygenated.
Calms care issue relates to terrarium size and the quantum of water it holds. There needs to be enough water in the tank to hold sufficient comestible matter to support the calm ’s nutritive requirements.
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Eventually, do you think you will the population of the black will decrease and the white increase?
A. Yes
B. No
Answer:
B. No
Explanation:
Projections show that whites will decline; the number of old people will increase; and racial minorities, mainly Hispanics, will grow the most, making them the main engine of demographic change in the U.S. for the next 10 years and beyond.
Today, there are over 74.1 million people under age 18 in the U.S. country. There are 56.4 million people age 65 and older.
Ten years from now, there will almost be as many old folks as there are young ones. The numbers of young people will have grown just a little to 76.3 million, but the numbers of old people will have increased a lot – to 74.1 million. A lot of these new elderly will be baby boomers.