I know for sure that A is one the answers.
3/8 x + 3/8 y
Answer:
Energy flows through an ecosystem in only one direction. Energy is passed from organisms at one trophic level or energy level to organisms in the next trophic level.
Explanation:
According to the CIA Factbook and the Pew Research Center, the five countries with the largest number of Catholics are, in decreasing order of population, Brazil, Mexico, the Philippines, the United States, and Italy.