Which of these statements is true?
all environmentalists are scientists.
ecologist and environmentalist mean the same thing.
an environmentalist wishes to preserve the environment.
all scientists are ecologists.

An environmentalist wishes to preserve the environment.

Explanation:

The Environmentalist is the professional responsible for dealing with the issues of preserving the environment and the conditions of life and existence on the planet. In short, an environmentalist wants to preserve the environment.

An Environmentalist is responsible for assessing the extent of beneficial or harmful changes to the environment caused by human activities.

It is under the responsibility of an Environmentalist to participate in studies that aim to survey the characteristics of the environment to analyze their reactions to possible changes, prepare reports on the impacts of certain activities on the environment, propose, program and monitor measures or actions preservation of the environment in urban and rural areas, monitors water, air and soil quality, seeks to control the impact that activities and works will have on the environment, prepares land use plans and reports on environmental impacts , offers advice to companies, public bodies for the preservation of the environment, creates projects to restore areas degraded by industrial, agricultural and mineral extraction activities, with sustainable development projects.

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the answer is b.) hydrogen bonds between bases.