What is one benefit of using tides for energy?
a. increased carbon dioxide production
b. unlimeted energy
c. reduced greenhouse gases
d. alteration to tides in area

The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

20 the compound al(nh3)2 has atoms of nitrogen.