Emily made four paper helicopters. Each was made out of a different kind of paper. She few each one several times in the hallwayand recorded how long each stayed in the air.
Explain how u know

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?

What is the difference between bacterial infections and viral infections?

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous