Usage of the muscles increase as you get older which can cause the muscles to become tired, worn out, or over used. Another way is as you get older the activities you can do become limited and so when you are not doing crazy and intense movements the muscles in your body start to slow down and get used to not doing alot of moving.

Explanation:

8 0

3 years ago

An organism is discovered that thrives in both the presence and absence of oxygen in the air. Curiously, the consumption of suga

pav-90 [236]

Answer: Facultative anaerobe

Explanation: Facultative anaerobes are organisms that can live with or without oxygen supply. this organism processes carbohydrates and proteins as oxygen is taken away from its enviroment in order to derive oxygen.

8 0

3 years ago

Please help.

m_a_m_a [10]

The answer to the 1st one is A

The 2nd one is i think would be D because the answer is plate tectonics so...

7 0

4 years ago