What makes each of the mechanical layers different? A. Whether the layer is rock or metal

B. Whether the layer is solid, liquid, or in between

C. Whether the layer is dense or thick

Veronica and her little sister, monique, are playing on a seesaw. if veronica weighs 75 pounds, and monique weighs 60 pounds, which statement is true?

Many body systems work together for proper functioning of the body and to maintain internal homeostasis. the works to break down food eaten before exercising. the takes in the nutrients obtained from the food. the body sweats as a mechanism to cool off, because the is working to flush out toxins.

Does all the energy stored by the phytoplankton reach the top level of the pyramid