The primary way in which toddlers play is A. dramatic play.
B. exploration.
C. art.
D. block building.

Do you think the gene eef1 alpha1 supports cell theory? explain your response.

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

Which greenhouse gas is emitted when burn fossil fuels for energy? a. nitrogen b. oxygen c. carbon dioxide d. helium