Valerie hypothesizes that frogs lay more eggs in warm water than in cold water. When Valerie designs her experiment, what should be the only variable that changes?

A.

frog species

B.

time of year

C.

water temperature

D.

water flow rates

How are the molecules of the plasma membrane arranged? in one layer in two layers in three layers in four layers

Carbon is found in all organic molecules. true false

Which behavior is most likely to indicate alcohol abuse A. Sakim has a couple of drinks and social gatherings B. Salina gets excited at the prospect of trying a new drink. C. Rashelle needs more than the usual number of drinks to feel high

The activity a cell performs is called

What is the role of splindle fibers in mitosis

Joshua cut his knee while rock climbing. The next day, the cut was red and swollen, and pus was present in the area of the cut. What caused the pus to form? A. macrophages excreting medicinal material B. the death of macrophages C.

Match the description in column 1 to the corresponding parts of the nervous system in column 2. A. Brings messages to your brain through your spinal cord autonomic B. If you stub your toe, this carries the message peripheral C.

when listening the levels of orginization in orginisims from the smallest to most complex, which level is just below organs in complexity

Relative to rainfall, the tundra is most like what other biome

Which artery is felt when taking the pulse at the wrist?