Explain how layers that form in ice are similar to tree
nings

Which are observations about the tree on the right ,? check all that apply

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Identify the type of energy used in each action. the flexing of an arm muscle: a signal transduction process by a neuron: a ball at the top of a hill: 1. electrical energy 2. mechanical energy 3. gravitational potential energy