frogs in a pond ecosystem fish in an ocean ecosystem bears in a tundra ecosystem lions in a grassland ecosystem
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Human interaction with the environment has led to increasing amounts of acid rain. Which population have humans adversely affected the most by contributing to the production of acid rain?
Possibilities:
- frogs in a pond ecosystem
- fish in an ocean ecosystem
- bears in a tundra ecosystem
- lions in a grassland ecosystem

frogs in a pond ecosystem