Researchers studying about ancient groups would look at their culture, traditional economy and irrigation methods used by the farmers.
C - prey
i - predator
a - parasitism
f - commensalism
d - competition
Calorie is a unit of energy.
Specifically, it is defined as the energy that is needed to raise the temperature by one degree Kalvin (or Celcius, which is the same) of one gram of water in an earth's atmosphere.
<u>Answer:
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The amendment to abolish slavery was not ratified for a long time because, in order to amend the Constitution, three-fourths of the states had to approve the amendment, and only fifty percent approved the amendment.
<u>Explanation:
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- The states that roughly made up the northern half of the United States were mainly against the practice of slavery and wanted it to be abolished for once and forever.
- On the other hand, the economy of the states in the southern United States depended on the production of cotton which was mainly carried out through slaves.
- Hence, the states in the south continuously opposed the abolition of slavery and that alone became the reason to not secure the support of three-fourths of the states.
