1. Stream dries up. Did the water in the stream: a. gain energy

b. loose eergy

c. keep the same amount of energy

d. never had energy

Explain your answer and choose the correct answer.

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

The cluster of developing cells from conception until birth is called an

Which type of mutation occurs in reproductive cells and can be passed to offspring? somatic mutation germline mutation point mutation frameshift mutation