Question

the environmental effects of an individual or group in terms of resources used and waste produced
ecological footprint
environmentalism
sustainable
theory

Explanation:

The description "the environmental effects of an individual or group in terms of resources used and waste produced" matches the definition of "ecological footprint". Environmentalism is a movement to protect the environment, sustainable relates to practices that can be maintained, and theory is a general concept, so the correct term here is ecological footprint.

Answer:

ecological footprint