Examlex
DNA consists of two polynucleotide strands that wind into a left-handed double helix.
Nonrenewable Resources
Finite resources that can become exhausted; includes those that take so long to replenish as to be effectively finite.
Geological Processes
The natural dynamics and events, such as volcanic eruptions, earthquakes, and erosion, which shape the Earth's landscape and structure.
Biodiversity
The variety of species of plants and animals existing at any given time.
Aldo Leopold
Renowned American author, philosopher, scientist, ecologist, forester, conservationist, and environmentalist, best known for his book "A Sand County Almanac."
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