Models are often used to explain scientific knowledge or experimental results. A model of an ecosystem is shown below.

This model classifies organisms based on
A. reproductive processes.
B. decreasing mass.
C. feeding habits.
D. ability to move.

Melissa lives in a town called greendale. she discovers that when she lights a match and holds it near her kitchen faucet, the little flame grows into a larger fire. melissa is surprised because she thought the water would extinguish the flame rather than ignite it further. her mother tells her that the water might be contaminated with dissolved methane, a primary component in natural gas. melissa investigates the matter and finds that cases of methane contamination started shortly after a company began fracking for natural gas in the area. based on this information, which three statements are plausible consequences of fracking in greendale?

If scientists are wrong about earth's age based on radioactive material and the decay rates are really much faster, how would nuclear power plants be affected?

What are the proteins in connectivity tissues of your foot examples of?