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grade 4 Science Chapter 3

Across
A system of overlapping food chains in which energy and matter flow through many branches
A living thing that makes its own food
The living and nonliving things and the ways they interact in an environment
A living thing too small to be seen without a microscope
The transfer of energy and matter from one living thing to another by eating and being eaten
An animal that eats other animals
Down
An animal that eats both plants and animals
A living thing that eats other living things for food
An organism that breaks down wastes and remains of other organisms
An animal that eats plants