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NARA [144]
3 years ago
13

30 POINTS!!!!!!

Biology
2 answers:
vladimir1956 [14]3 years ago
8 0
I believe the answer is B.
satela [25.4K]3 years ago
3 0
B. The valves of the aorta and pulmonary artery close, producing the first heartbeat. Is the correct answer. Hope this helped. Have a good day! :)
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True or false: An allele is a version of a gene?
LUCKY_DIMON [66]

Answer:

True

Explanation:

I will give an example. Two plants cross breeds. A pink flower and a red flower. The red flower has a gene for red color and the pink has a gene for pink color. Mix the two together and you have an offspring with two different genes, or alleles, that are either going to be mixed or the plant will be one or the other color.

4 0
3 years ago
It can be said that metabolism and homeostasis are related. Why can you not achieve homeostasis without metabolism?
Harrizon [31]

The right answer is A.

Metabolic homeostasis is provided by a set of interactions between the central nervous system (CNS) and peripheral tissues. The CNS controls the periphery by regulating the fraction of energy that enters the body (caloric intake) and that which emerges from it.

To perform this role, the CNS receives signals from peripheral organs and provides information on peripheral metabolism, as well as the extent of the reserves available to the body.

8 0
3 years ago
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Which of the following is a trur statement? *
Basile [38]

Answer:

i think C

Explanation:

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

7 0
3 years ago
What is a hypothesis?
earnstyle [38]

Answer: D.) a suggested answer to a problem

Explanation:

A hypothesis is a supposition, suggested answer or a proposed explanation based on limited evidence which can be use to start an investigation. A hypothesis is more than a guess but less than a established theory and it can be tested through study and experiments.

<u>A hypothesis is part of the scientific method </u>because it is a prediction which can be tested and the results from those experiments may disprove a hypothesis, but can never entirely prove one.

It is not a conclusion because it is an idea which tries to explain an observation. It is not information collected from experiments because hypothesis are formulated before carrying out the experiments and it is not a widely accepted idea because it just proposes a tentative explanation about a phenomenon.

7 0
3 years ago
What do you call the type of government that combines aspects of both unitary and confederal government?
siniylev [52]
A federal government is the type of government that combines aspects of both unitary and confederal government. The United States has a federal government. 
8 0
3 years ago
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