Which of the following offers a good example of carrying capacity? (3 points) Select one:
a. When we eat animals high on the food chain, we consume many of the toxins they and their food sources have consumed.
b. Industrial development has threatened the Great Lakes ecosystem for decades.
c. The food web of organisms in the tropical rainforest consists of numerous food chains that interact with one another.
d. The earth can support an environmental footprint of five and one-half acres per person.