Oxygen atoms gain two electrons when they react. Write the symbol of the ion that results. Is it a cation or anion?
What will be an ideal response?
Answer: O^2- ; anion
Biology & Microbiology
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Nearly ALL cases of acute listeriosis require hospitalization
Indicate whether the statement is true or false.
Biology & Microbiology
Which biome is a treeless plain that occurs around
the Arctic Circle? a. boreal b. taiga c. cold desert d. cold grassland e. tundra
Biology & Microbiology
Matings between two species that produce embryos that fail to develop are evidence of:
a. hybrid sterility b. hybrid breakdown. c. hybrid inviability. d. ecological barriers e. prezygotic isolation.
Biology & Microbiology
Which biome has the greatest number of distinct layers of vegetation?
a. savanna b. tropical rain forest c. desert d. chaparral e. grassland
Biology & Microbiology