The diagram shows a certain type of fungus growing on food.

which best describes what type of fungus this is?

What substance acts to prevent sudden ph changes in bodily fluids?

Ascientific idea becomes valid when it is what?

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere