What is a trace element?
A. An element that is required in miniscule amounts for life
B. An element that is evenly distributed on the planet
C. An element that is used to identify the location of other elements
D. An element that is very common in nature
Answer: A
Biology & Microbiology
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What will be an ideal response?
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The Holocene epoch marks the appearance of:
a. humans. b. reptiles. c. amphibians. d. large mammals. e. marine vertebrates.
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The outcome of the Gram stain is based on differences in the cell's
What will be an ideal response?
Biology & Microbiology