A, B, and C are true so that would leave D as your answer.
Answer: The correct answer is : B. Laboratory experiments do not generally reflect real-life circumstances.
Explanation: One of the advantages of laboratory experiments is that cause-effect relationships are easier to consider. In a laboratory the independent variables are manipulated by the experimenters.
Answer:
to emphasize the characteristics of groups; is to emphasize individual cases
Answer:
it is right
Explanation:
Animals get the nitrogen they need by eating plants or other animals that contain nitrogen. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use.
The reason the allowance paid to Senators should be based on population is that the job of a Senator is to represent his constituent.
The function of a United States Senator is many; representing their constituents is one of them.
To represent the constituent effectively, a Senator is expected to speak with the people from his states, discussing and engaging them periodically.
This often requires meeting people in different districts in his state, holding press conferences, town hall meetings, or going to the media.
Each district is based on population, and the higher the population, the higher number of districts or communities a Senator would have to meet and engage.
Hence, in this case, it is concluded that giving senators allowances based on population is justified.
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