HELP Which of the following scenarios is most likely using the same type of cell transport as the sodium-potassium pump?
A. A child's badly skinned knee heals rapidly.
B. Animal cells control calcium levels to maintain proper signaling between cells.
C. Cell activities remove fluid in a patient with swollen abdominal tissues.
D. Minerals from food diffuse into an animal's intestine.

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?