Answer:
c. it is a pure market economy.
Answer:
fossil fuels are more toxic than the carbon emissions from volcanic activity
Answer: a. testing effect
Explanation:
Testing effect is a type of threat to internal validity of an experiment. Internal validity is assessing whether a factor makes a difference in an experiment or not and if it does, whether there is adequate evidence to support this correlation.
Testing as a threat to internal validity is when a second test is taken on the outcome of a first test. Other internal validity threats are history, maturation, instrument modifications.
I believe the answer is: D. L<span>imited government by restricting the powers of the federal government
In the concept of limited govenrment, a country still acknowledge the existence of federal government as the higher hierarchy compared to other government units. But, when the smaller units unite to stand against' the federal government policy, The federal government can still be forced to follow a certain decision</span>
They built banks to irrigate their fields
