Identify the role of carbon dioxide in photosynthesis.

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Which of the following shows the correct order in which light information travels through the eye? (2 points) lens, pupil, retina, optic nerve pupil, lens, retina, optic nerve pupil, lens, optic nerve, retina lens, pupil, optic nerve, retina

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.