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natta225 [31]
3 years ago
7

In girls, the onset of puberty brings the lowering of the voice at approximately age ___.

Biology
1 answer:
solmaris [256]3 years ago
3 0
The answer should be 12-14 
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kobusy [5.1K]
I think your answer is c but im not a 100% sure
3 0
2 years ago
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Recall that the ability to maintain a stable internal environment in spite of changes in the external or internal environment is
muminat

Answer:

Homeostasis

Explanation:

Homeostasis is a mechanism of the body which involves negative feedback loops that helps the body to maintain a stable internal environment when there is an external or internal change.

An example of homeostasis in the human body is the regulation of the internal temperature of the body. When there is a change in the normal body temperature, for example, if your temperature drops sharply below 37 degrees Celsius, homeostasis kicks off in the body to maintain the normal body temperature. Homeostasis uses thermoregulation mechanism which triggers shivering to raise the body temperature in an attempt to return it back to normal.

Homeostasis also makes it possible for the body to maintain the balance of water and other substances in the body like calcium in our body. For example, when the calcium level drops below normal level, the parathyroid gland secretes hormone which helps in the increasing of blood calcium levels.  

Homeostasis s a essential mechanism that helps keeps the body in a balance and functional state.

5 0
3 years ago
Which of the following statements are accurate? (MORE THAN ONE OPTION)
ryzh [129]

Answer:

The statements in options A,B,C,D and E are correct:

A. Deuterstomia, Protostomia and Ecdysozoa are clades of bilaterians.

B. Invertebrates do not posses a back bone.

C. Lophotrochozoans posses a flexible exoskeleton for protection from harmful environments.

D. Studies show that sponges do not consist in a group with a common ancestry hence all animals except sponges share a common ancestor.

E. Lophotrochozoans posses three germ layer: the endoderm mesoderm and ectoderm, are bilaterally symmetrical and are invertebrates.

8 0
3 years ago
What is a secondary consumer?
hammer [34]
Just like the name suggests it's the second consumer in a food web or food chain that eats the primary consumers or the producers.
7 0
3 years ago
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Stimuli that increase the probability of a response they follow by removing an unwanted stimulus are called _____.
kirza4 [7]
Coordination.............
8 0
3 years ago
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