Which is a biotic factor operating within an ecosystem?

A.

sunlight

B.

water

C.

bacteria

D.

minerals

Which statements describe disadvantages of using natural gas as an energy source? Check all that apply. It is expensive to use. It is hard to stop using. It is a nonrenewable resource. It is damaging to the environment.

13) In human males, the urethra is used for transport of A) egg cells only. B) sperm cells only. C) egg cells and urine. D) sperm cells and urine.

The correct sequence of sensory processing is A) sensory adaptation → stimulus reception → sensory transduction → sensory perception. B) stimulus reception → sensory transduction → sensory perception → sensory adaptation.

I had the privilege of visiting mt. st. helens in the late 1990s. one of the things i noticed was that very few plants were growing in the blast zone due to the scarcity of certain essential elements.

Why might a scientist conduct an experiment in the lab, and then repeat the experiment in the field?

What is the best method of suicide

What happens to the water contained in the materials that pass into the large intestine?

What is reconstrutive memory

What percentage of human sperm cells carry an x chromosome?

After a major environmental change, what happens to species that do not adapt or move? i need it fast