1. In an energy pyramid, which way does energy transfer? A. From the top of the pyramid to the bottom
B. From the bottom of the pyramid to the top
C. Between the top Ind the bottom
D. Energy doesn't transfer between layers

Which of the following involves only abiotic factors? a. a large rock being weathered by wind and rain b. an otter using a stone to break open a sea urchin c. a spider building a web in the corner of a building d. a pine tree absorbing light from the sun