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Semester 1 review

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Across
1
Trophic level that consumers other consumers
3
The study of the interaction of living organisms with their nonliving surroundings
6
The back and forth evolutionary adjustment between organisms
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When doing scientific notation, moving the decimal left causes the exponent to be
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The variable that is changed in an experiment
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Positive charge subatomic particle
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Trophic level that eats producers
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The minimum amount of energy needed to start a reaction
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The mass of the atom
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Negatively charged subatomic particles
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Where do extra chemicals get poured into
Down
2
When doing scientific notation, moving the decimal right causes the exponent to be
4
Breaks down dead or decaying material
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The cycle that contains nitrogen-fixing bacteria
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First step of the scientific method
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Trophic level that makes its own food
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Answers a scientific question
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Maintain stable internal conditions
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The number on the periodic table that tells how many electrons
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The variables that are not changed in an experiment