The reason that producers are found at the bottom of the trophic level is because producers eat plants and other things and other types of animals eat them and take their energy. Hope this helps.
<span>A client who is unable to speak logically or follow directions, with the added information from his family that the client has been under a great deal of stress for about 6 months, then more than likely the client is experiencing exhaustion. Exhaustion is a state of extreme physical or mental fatigue.</span>
I think its a density dependent limited factor