Which of the following is not a physical change? mixing two cheeses in a bowl grating cheese melting cheese fermenting of cheese

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments

Is a chemical message sent by another individual.

In medium-sized stars such as the sun, nuclear fusion almost always means the fusing of nuclei to form , but larger stars can produce elements as heavy as