What is the purpose of reabsorption in the nephron

Jerry wants to consume no more than 45% of his calories from carbohydrates. calculate his requirement for calories from carbohydrates based on a 2,500 kcal per day intake.

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain