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A. Diversity of Life
By the end of 2nd grade, students should know that:
- Some animals and plants are alike in the way they look and in the things they do, and others are very different from one another.
- Plants and animals have features that help them live in different environments.
- Stories sometimes give plants and animals attributes they really do not have.
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B. Heredity
By the end of 2nd grade, students should know that:
- There is variation among individuals of one kind within a population.
- Offspring are very much, but not exactly, like their parents and like one another.
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C. Cells
By the end of 2nd grade, students should know that:
- Magnifiers help people see things they could not see without them.
- Most living things need water, food, and air.
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D. Interdependence of Life
By the end of 2nd grade, students should know that:
- Animals eat plants or other animals for food and may also use plants (or even other animals) for shelter and nesting.
- Living things are found almost everywhere in the world.
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E. Flow of Matter and Energy
By the end of 2nd grade, students should know that:
- Plants and animals both need to take in water, and animals need to take in food.
- Many materials can be recycled and used again, sometimes in different forms.
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F. Evolution of Life
By the end of 2nd grade, students should know that:
- Different plants and animals have external features that help them thrive in different kinds of places.
- Some kinds of organisms that once lived on earth have completely disappeared, although they were something like others that are alive today.
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