They breathe through their skin. Air dissolves on the mucus of their skin, so they MUST stay moist to breathe. If worms dry out, they suffocate. As fresh air is taken in through the skin, oxygen is drawn into the worm's circulatory system, and the worm's hearts pump the oxygenated blood to the head area.
Plants store starch which is a complex carbohydrate. This can be broken down into a simple one known as glucose. They then use glucose for energy.
Answer:
It's producers because those are the one's that sell them to the consumers.
<span>B. Social learning theory
Behaviorism is a popular view in psychology concerning behavior and responses is said to be shaped by one's environment.
One component of behaviorism is social learning theory which suggests that </span>"behavior changes as a result of observing people in various
<span>
situations".</span>
There are other two views:
1. Classical conditioning
2. Operant conditioning
