The plasma membrane is a special cellular structure that can be found in animals and plants that has the sole role of keeping things together and preventing things from coming in. For these two reasons, it's an important player in homeostasis.
Arthritis is the right answer
Bart is most likely experiencing major depression with hallucinogenic features.
Talk to your counselor about it at school. If your mom hurts you, tell your counselor. They can do things to help you and it would be good for you to tell someone about whats going on.
Answer:
They provide a weight-bearing workout.
Explanation:
Free weight are normally used in exercises. It is quite different from weight machines as it can be used to perform any movement. It also helps to work on weaker parts of the body to become stronger through continual focus.
The weight machines are however known to be safer and the free weight provides a weight-bearing workout because it can be moved in different directions and positions.
