Fact 1: Many consumers feed at more than one trophic level. Fact 2: Consumers are heterotrophs that feed on tissues of other organisms. Given the two facts above, what may eat other organisms at more than one trophic level?
Possible answers:
1). barnacles
2). chickens
3). fur seals
4). humans
5). heterotrophs
6). mammals
7). animals
8). rabbit
Answer:
5).