How do activities that increase the emission of greenhouse gases, water pollution, and resource use affect a person's ecological footprint? a. they decrease it. b. they convert it to hectares. c. they convert it to acres. d. they increase it.

D. They increase it.

Explanation:

Activities that increase the emission of greenhouse gases, water pollution, and resource use increase a person's ecological footprint. That's because all of these activities increment impact of that person in the environment. In other words,  increment the amount of the environment necessary to produce the goods and services necessary to support a particular lifestyle.