Both bacteria and viruses

A. have ribosomes.

B. have cell walls.

C. can cause disease.

D. all of these

which of the following statements correctly describes the transfer of energy by water waves? A. energy is only transmitted at the crest of the wave B. energy is only transmitted at the trough of the wave c.

Since the polar bear is vanishing how can it be protected

Oxygen moving from the bloodstream into a cell down a concentration gradient is a form of A: osmosis B: endocytosis C: Active transport D: passive transport

How many letters does DNA have?

Name two processes in model 1 in which water is converted to vapor

What does the heart do?

What is a radical?

A series of waves with decreasing wavelength labeled A, B, C, D, E, F, G from left to right as wavelength decreases.

Cameron is collecting data to determine the time of completion for each stage of germination in seeds. He is using bean seeds for his investigation and recording his results. He repeats his data collection many times to obtain reliable results.

Which human action has not lead to significant changes in Earth's biomes?