Certain bacteria live in plant roots and receive sugars from the plants. The bacteria provide a source of useful nitrogen for the
plants.
This best describes which type of relationship?

4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.

Which of the following is a common danger of commercial fishing?

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.