A conservation biologist joins a political party and campaigns within the party to help other members understand issues relating to climate change and biodiversity. She also belongs to several environmental organizations, which she supports by giving public talks and lobbying members of Congress on environmental issues. This person could best be described as a(n)

This person can be described as an environmentalist.

Explanation:

An environmentalist is a person who has adopted environmentalism as a philosophy that makes this person work and manages to direct their activities towards the preservation of the environment and sustainable development. These people seek to teach others to preserve the environment and seek to defend it through politics, economics and any other social factor that can help to achieve this goal.

The person presented in the question above is an environmentalist, because, as we can see, this person is available to give a lecture on environmental preservation, interacts with environmental activist groups and seeks political support to address issues on climate issues, sustainability and biodiversity .