Question: Q: What device is an electrochemical cell or series of cells that produces an electric current? Choices: - reactor - magnet - generator - battery A:
Answer: battery

Question: Q: What works by selecting for alleles that confer beneficial traits or behaviors, while selecting against those for deleterious qualities? Choices: - same selection - artificial selection - characteristic selection - natural selection A:
Answer: natural selection

Question: Q: Land could not be colonized by other organisms until what became established? Choices: - gases - carbon dioxide - oxygen - plants A:
Answer:
plants