These are four types of feathers found in birds. the structure of these feathers is most likely composed of
a. starch.
b. nucleic acids.
c. protein.
d. lipids

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.

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."