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Science Crossword

Across
Organism that makes its own food
_______ species is the first species to colonize an area after succession
The process by which plants use sunlight, CO2, and water to make food
This biome is very cold and dry, and has little trees
Organism that eats only plants
The number and variety of organisms in a given area during a specific period of time
Place where an organism lives
Down
Organelle in plant where photosynthesis occurs
Force of attraction that keeps planets revolving around the Sun
The pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms
A push or pull exerted on an object
The ability to cause change
Most all of the energy on Earth comes from the _________.
This type of weathering is the mechanical breakdown of rocks into smaller pieces
The transfer of energy to an object