The diagram below shows an Arctic energy pyramid . As energy moves up trophic levels of the artic energy pyramid, it A. increase
B. Decrease , then increase
C. decrease
D. increase , then decrease

'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.

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

Can nonrenewable resources be used sustainably?