Q: Fact 1: Energy is passed up a food chain or web from lower to higher trophic levels. Fact 2: Plants represent the first trophic level. Given the two facts above, what passes energy up the food chain to adult vegans?

1). cows;
2). animals;
3). Batteries.;
4). chickens;
5). Power companies.;
6). glucose;
7). Humans.;
8). Plants.;
The answer is:
8).