When Amy stepped on a sharp nail, she felt pain. For her to feel pain, there must have been sufficient of a neuron to create , which is the first step in neural communication.

Sydney drew a flow chart to illustrate the nitrogen cycle. which labels best complete the flow chart? x: producers undergo photosynthesis. y: nitrogen compounds are released into the air. x: nitrogen compounds are released into the air. y: producers undergo photosynthesis. x: free nitrogen is in the atmosphere. y: producers absorb nitrogen compounds through their roots. x: producers absorb nitrogen compounds through their roots. y: free nitrogen is in the atmosphere.

What is an animal that lives by preying on other animals

Agene in a type of bacteria when the ses bacteria reproduce asexually this mutation can only be inherited by