The answer is C.<span>The shell protects the crab from predators</span>
It is C. Because the other 3 are in side of the the cell membrane to be protected.
What factors influence the input and output of carbon through Earth's spheres? The oceans on Earth act as carbon sinks. The combustion of fossil fuels contributions to an increase in atmospheric carbon dioxide. Animals are solely responsible for the release of carbon dioxide via respiration
