Answer: "control group" .
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Answer:
A. an Allee effect.
Explanation:
Allee effect: In biology, the term "allee effect" is described as one of the phenomena which are distinguished as a specific correlation that exists between the mean of individuals fitness related to a particular species or population and the population density or size.
The main cause of the allee effect is the genetic mechanism.
In the question above, the given statement signifies an allee effect.
Answer:
Infra- means "below;" so the infrastructure is the "underlying structure" of a country, state, etc. and its economy, the fixed installations that it needs in order to function. These include roads, bridges, dams, the water and sewer systems, railways and subways, airports, and harbors.
I tried, hope this helps :)
