What's one of the fastest-growing professions in the United States? A. Environmental scientist
B. Farmer
C. Solar panel installer
D. Green car mechanic

How many variables are altered in a good experiment? a.1 b.0 c.2 d.3

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?