BIOLOGY HIGH SCHOOL

The pressure needed to pump blood back to the heart is produced by the _____.heart
body muscles
contracting arteries

Answers

Answer 1
Answer: it would be the muscles because their contracting and forcing the blood back  to the heart
Answer 2
Answer:

Answer:

the body muscles

Explanation:

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What does mendels law of independent assortment say?

Answers

Medals law of independent assortment states that when two or more characteristics are inherited, individual hereditary factors assort independently during gamete production, giving different traits an equal opportunity of occurring together.
law of independent assortment. the principle, originated by Gregor Mendel, stating that when two or more characteristics are inherited, individual hereditary factors assort independently during gamete production, giving different traits an equal opportunity of occurring together.

Human blood groups are governed by three alleles, a, b, and o. a and b are codominant and o is recessive to both. if a woman with type o blood is expecting a child. her husband is typea. both the woman's father and her husband's father had type b blood. what is the probability that the child will have type o blood

Answers

The probability is half (1/2). I have attached an explanation along with the genetic diagram. Hope this helps and you can ask me any further questions you have about my explanation. :)

The water cycle is also referred to as the _______ cycle.A. oxygen
B. hydrologic
C. hydrogen
D. watershed

Answers

Answer=B

The hydrologic cycle is another name for the water cycle.

The endosymbiont theory proposes that eukaryotes evolved from a symbiosis between a prokaryote and a protocell.a. True
b. False

Answers

"False", The endosymbiont theory proposes that a euukaryotes envolved there are not eukaryotes invovled in the endosymbiont theory
. 

At the present time both populations have the same number of individuals in which of these countries will the population growth over the next 20 years place the greatest strain on the enviorment

Answers

The diagram shows the current percentage of each population by age and gender (male/female) for two countries. After carefully analyzing the graph I came with the conclusion that:



(1) Country A, the population growth over the next 20 years will place the greatest strain on the environment since the larger percentage of young people could result in rapid population growth.


I hope this helps, Regards.

A student plans to measure the circumference of a balloon at various temperatures to determine how temperature affects the volume of a gas. What is the independent variable in this experiment?

Answers

I think the independent variable is the temperature, while the dependent variable is the size of the balloon. The factor that is held constant is the amount of air in the balloon. An identical balloon kept at the original temperature. Independent variable in an experiment is the variable that the experiment plans to change while the dependent variable is the variable whose value depends on the independent variable. 
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