Ineed asap . do not guess the answer : )

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal