Due in 3 minutes. i swear, i'll show you the timer.

explain why increased carbon dioxide levels cause an increase in global temperatures. give two facts that explain your explanation.

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

What are the pros and cons of quadrat sampling?