Which membrane protein is responsible for restoring the original concentrations of sodium and potassium?

What are two reasons for why a species might disappear from the fossil record?

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid