Which statement best describes a keystone species?
A. It has little genetic variation
B. It...
Which statement best describes a keystone species?
A. It has little genetic variation
B. It has an extremely high population
C. It remains unaffected by all environmental changes
D. It has a strong influence on the ecosystem
E. It's the first species to populate a new ecosystem
Answers: 1
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What makes the results of a scientific experiment accurate? a) having multiple trials b) lacking any supporting data c) working in a lab d) using a hypothesis that is always true
Answers: 2
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The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?
Answers: 3
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