If you rub your finger across the body of an earthworm, you may notice little ripples. earthworms were among the first organisms to display a coelom segmentation jointed appendages an endoskeleton

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

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

Each hereditary trait corresponds to