Which of these describes atrophy? a.)
Muscle tissue doesn't grow from exercise

b.)
Muscle tissue grows uncontrollably

c.)
Muscle tissue tears

d.)
Muscle tissue shrinks

d muscle tissue shrinks

Explanation:

Atrophy is the decrease in the size of a tissue or organ due to cellular shrinkage

More information:

the decrease in cell size is caused by the loss of organelles, cytoplasm and proteins.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: