The sierra club later expanded its mission to promote the use of alternative energy. encourage people to enjoy nature. improve air quality across florida. set aside land for conservation.

The correct answer is “Set aside land for conservation”

The Sierra Club is an organization that was created in 1892 by California residents. They aimed to promote national parks and protect the environment. The group has played a major role in setting aside land for conservation, like with the National Forest Management Act, the Alaska National Interest Land Conservation Act.

donald carl johanson (born june 28, 1943) is an american paleoanthropologist. he is known for discovering – with yves coppens and maurice taieb – the fossil of a female hominin australopithecine known as "lucy" in the afar triangle region of hadar, ethiopia.

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