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Semester 1 review

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