Drag each label to the correct location on the diagram. Each label can be used more than once, but not all labels will be used.
The diagram shows some of the steps in the flow of energy through an ecosystem. The arrows represent the transfer of energy. Label each arrow with the type of energy being transferred.

electrical

thermal

nuclear

chemical

radiant

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables

How many chromosomes are in a human gamete?