All organisms on earth require a source of energy to live. ATP is the fuel that powers all the activities of cells on earth. Which statement Best describes how ferns, people and flatworms obtain energy?

The existence of a single original continent has been proven by the presence of:

What subject should i study for a project

Which of the following is true about muscle tone? A. It is responsible for keeping the back and legs straight when you're relaxed. B. It decreases as you exercise more. C. It increases with age. D. It describes the relaxing of some muscles.

Which organism would be the secondary consumer in this food chain? leaf insect bat cat

Which tube is likely to contain digestive enzymes? (digestive system)

Why is it necessary to do a spinal tap when you suspect a bacterial infection of the central nervous system? why can't you use a blood test?

Name the major greenhouse gasses and how they get into the atmosphere

Which type of cell goes through the determination process?

What organic molecule is the basis of enzymes.?

Which transport mechanisms require the formation of a vesicles to transport material into or out of the cell? A: diffusion and osmosis B: exocytosis and calcium pumps C: exocytosis and endocytosis D: diffusion and facilitated diffusion