The unit is called Ecosystem.
Ecological units comprise concepts such as population, community and ecosystem.
<em>An ecosystem</em> is a community of plans and animals interacting with each other in an particular area. They also interact with their non-living environments (water, earth, sun, soil, climate and atmosphere).
The robins are in relationship with the earthworms because the robins eat them in order to survive and as a part of the food chain. The food chain is a linear sequence of organism through which nutrients and energy pass as one organism eats another. Ecosystems consist of creatures that mutually benefit from each other.
The Founding Fathers knew that in the upcoming future with the changing time, there would be a need of change in the US government that would stand for the upcoming generations.
<u>Explanation:
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The affirmation of Independence had a presumption that people possesses a Right of Revolution. So in order to avoid any riot, they included amendment that offered a method to pursuit the Right of Revolution without any resort to arms and initiated the power in order to change the Constitution to the place it belongs to with the people. The Founding Fathers made the amendment procedure difficult to achieve because to look in the political leads which created the ratification of the constitution. They believed and recognized that the 'ground rules' should be constant in order for a government to function well.
Germany wanted to build up her empire. This is known as imperialism.
Answer: A is the answer
Explanation: A slave would count as three-fifths of a person when counting population for representation,
They began using harsh discipline, so that citizens would be less swayed to commit illegal crimes