Which describes speciation?

A. the grouping of a species

B. the formation of a new species

C. the extinction of an existing species

How does thermal energy transfer when a slice of pizza is warmed in the microwave

The law of universal gravitation A. Produces stars and planets B. Produces stars but not planets C. Produces planets but not stars D. Cannot produce stars or planets

Stefan is writing a report about the law of reflection. In his report, he says that the angle of incidence is the angle between the surface of the mirror and the incoming ray. Do you agree with him? Why or why not?

What is the function of mitochondria in cells

Which part of the cell memebrane allows the cell to exist in the water

Without enzymes, what would happen to the rate of chemical reactions?

If a plant has both male and female reproductive organs it is: a) Monoecious. b) Dioecious.

Earth's tectonic plates A. move in similar ways today as they did in the past. B. can move up and down but not sideways. C. didn't start moving until the 21st Century. D. moved only during Earth's earliest period of history.

Why is taking vitamin c ineffective at enhancing iron absorption from standard iron supplements?

5. If the pressure exerted on a gas in a flexible container is increased does the density of the gas change? Why or why not? Explain your answer