We only see receivers of light because

A. light is absorbed by them.

B. light reflects off of them.

C. they give off their own light.

What is a normal temperature for dogs?

Which is a possible reason for the transition of algae from unicellularity to multicellularity?

Depolarization of one group of smooth muscle cells rapidly spreads to other smooth muscle cells, leading to coordinated contractions. This electrical coupling is due to A. autocrine signaling B. paracrine signaling C. endocrine signaling D.

The condition of paralysis is usually attributed to:

What will most likely happen if the level of greenhouse gases continues to rise?

The storage of heat in the lower layer of the atmosphere due to certain gases absoring heat is called

A red blood cell is 8 μm in diameter. If drawn 100 times larger than its actual size, what diameter will the drawing be in mm? A. 0.08 mm B. 0.8 mm C. 8 mm D. 80 mm

Which kind of biologist would most likely use satellite technology?

What is the complementary base of adenine in DNA? guanine cytosine thymine uracil

Fish in a marine environment must maintain a relatively constant ion concentration in their tissues and blood. How do the chloride cells in the gills aid fish in the removal of excess ions? A.