In humans, the small intestine can be over 8 meters long. Why is this organ is so long?

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

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.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water