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Environmental Problems, their Causes, & Sustainability

Earth's Systems & Cycling

Ecosystems, Food Webs, & Biodiversity

Wildlife Management, Fisheries, & Environmental Conservation

History, Laws, & Economics of the Environment

Human Population Dynamics & Urban Environments

Toxicology & Waste

Water Resources & Pollution

Agriculture, Forestry, & Soil/Land Management

Energy (Fossil Fuels & Alternative Energy Sources)

APES Review

Astronomy