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.
Oxygen gas contributes to the green house effect
I would say that support is crucial, especially family support for people with eating disorders. For example, those people who are under a lot of stress may eat too much and thus gain too much weight, whereas those who are depressed may eat too little so lose weight and both conditions can be helped by moral support and helping the afflicted person seek help as in medical help, massage, energy healing etc to help relieve their stress.
Answer:
A. Survivorship for a Type I curve is nearly 1,000 times as great as survivorship for a Type III curve.
Explanation: