Answer:
<em><u>Individual organisms live together in an ecosystem and depend on one another. ... One category of interactions describes the different ways organisms obtain their food and energy. Some organisms can make their own food, and other organisms have to get their food by eating other organisms</u></em>
A the flowering of the four oclock plant at the same time
it led to a study of how to induce cancer cells to divide more rapidly
Usually is only because of blood vessels breaking in the skin.
