Answer:
Primary producers use energy from the sun to produce
Explanation:
Primary producers use energy from the sun to produce their own food in the form of glucose, and then primary producers are eaten by primary consumers who are in turn eaten by secondary consumers, and so on, so that energy flows from one trophic level, or level of the food chain, to the next.
C. Since they have to gain that skill.
Electric Current. Here are some more words to meet the requirements.
A, because it the constant variable
Microevolution - Allele frequency changes in a certain population over an amount of generations, it can also be simply described as "an evolutionary change in populations".
