Are crystals minerals?

What is turgor pressure, what causes it, and what does it do for a plant?

Explain how the political influence of african americans leaders became weaker.

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