The iris in the human eye contracts and expands, controlling the amount of light that reaches the retina. What types of muscle control this?

What effect does the smoke have on the pH of water?

The body of a slime mold that flows over a rotten log appears to lack any partitioning into distinct cells; however it does become cellular when it changes form and produces spores.

Which clouds are best associated with a thunderstorm? A. high cumulonimbus B. towering funnel clouds C. swirling clouds with a calm center

Which of these are the direct negative result of strip mining on the surface choose to

What is the name of the true god?

In a plants stem the vascular tissue is A. is always arranged in rings of vascular bundles B. is continuous from the roots to thel leaves C. carriers nutrients up the stem but not down D. plays a role in photosynthesis and storage.

During which stage of sex cell formation does the number of chromosomes decrease from diploid (2n) to haploid (n) ? a. prophase 1 b. prophase 2 c anaphase 1 d. anaphase 2

What would most likely interest an environmental scientist

Do you believe you have a personal responsibility to protect the environment

What happens to the total charge of the compound after the ions bond together?