If I'm correct it's false.
The answer for study island is genetic variation
Answer:
Tropical- rain forests are considered to be the lungs of the Earth due to their role in the carbon-oxygen cycle. The rain forests take in carbon dioxide and release oxygen into the Earth hence, providing the Earth with an abundance of oxygen. The working of these tropical rain forests is just like the working of our lungs, lungs remove carbon dioxide from the body and supply oxygen. Tropical rain forests carbon dioxide for the Earth and supplies it with oxygen.
Answer:
Enzymes help speed up chemical reactions in the human body. They bind to molecules and alter them in specific ways. They are essential for respiration, digesting food, muscle and nerve function, among thousands of other roles.
