What directly controls what enters and exits a cell?

[34 points awarded to the best answer, use facts and/or data] 1.) what's the likelihood of thunderstorms occurring in the state of maryland? {this question is for a project for science, use facts and/or data and explain why . 34 points to the best answer]

Humans have to eat food to get the nutrients that keep us alive, but plants use the sun to power photosynthesis

Which animal receives the greatest amount of the original energy found in the producers