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.
I don't know if this will help you or not but here you go.
https://quizlet.com/225903868/lesson-11-the-nature-of-life-unit-test-biology-a-unit-1-the-nature-of-life-flash-cards/
Answer:
in group 5. Organic Wastes
Explanation:
Remember in a chemical lab, in a hospital or in an industry there is always some wastes that need to be treated in an specific way. There are 19 categories in which the wastes need to be poured in order to be treated. The starch is an organic waste that normally is involve in biological processes. This waste is consider as a non - toxic, in this way can be join with other organic wastes as acetic acid, peroxide, etc.
The statement that describes the difference between the 2 isotopes of nitrogen would be the last set.
Nitrogen-14 has 7 electrons, 7 protons, and 7 neutrons
Nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons.
The coast is warmer and better environment
