It was a physical barrier. Literally a concrete wall.
Answer:
President Roosevelt based his conservation movement on the idea that conservation is "the application of common sense to common problems for the common good.” Through this movement, much land has been preserved. In one paragraph, explain how you see the preservation of land and resources working for the common good of people today.
Explanation:
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.
Answer:
D. Renounce your citizenship
Explanation:
To become an expatriate, is to renounce your citizenship. Example: A man renounces his citizenship from Canada. He is now an expat.
