Environment

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Pollution

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Environment & Ecology (K-2)

Humans & the Environment

Recycling

Disposal Methods

Pollution

Effects

Pests

Everyday Use

Resources

Agriculture & Society

Tools & Machinery in Agriculture

Life Cycles

Plants & Animals in PA

Natural Resources

Nonrenewable Resources

Renewable Resources

Products & By-products

Watersheds &Wetlands

Aquatic Habitat

Ecosystems

Various Systems

Water Cycle

Pattern

Components

Ecology

Seasons

Affects on Environment

Changes

Living & Nonliving things

Food Chain

Sources of Energy

Habitats

Basic Needs