What shows when organisms first appeared and the order they appeared in?

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.

Explain why biological control methods are generally environmentally superior to chemical pest control methods.

Which of the follow describes a disadvantage secondary sources have compared to primary sources?