Which of these are found in experimental investigations, but not in descriptive investigations? Check all that apply

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.

9. the history of life on earth is recorded in