31. Why do arrows in a food chain-only point in one direction?

Explain why phospholipid molecules form a bilayer. (3 marks)

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.

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above