How does the endocrine system change over a period?

As the body ages, changes occur that affect the endocrine system, sometimes altering the production, secretion, and catabolism of hormones. ... For example, the amount of human growth hormone that is produced declines with age, resulting in the reduced muscle mass commonly observed in the elderly.

Explanation:

a. as the temperature increases, the kinetic energy of the gas molecules increases & the molecules move faster & further away from each other.

b. if you decrease the temperature of a fixed amount of gas at constant pressure, the combined gas law reduces to charles's law. in this case, volume will also decrease.

this is math not biology xd