Answer: There is no link between fluoride exposure and increased cancer risk in humans.
Answer:
By creating some crops that resist certain insects
Explanation:
The answer is field investigation.
<span>A field investigation includes observation of
free-living animals in their natural habitat without affecting them, their
behavior, or their habitat. So, observation of tigers' activity in their native habitat is an example of the field investigation. The investigator would simply observe their behavior, not affecting the tigers in any way.</span>
The correct answer is Sedge
. Groups of specialized cells cooperate to form a tissue, such as a muscle.
.This requires that they take in nutrients, which they use to provide energy for the work that cells do and to make the materials that a cell or an organism needs. Specialized cells perform specialized functions in multicellular organisms.
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