I have no idea, but I wouldn't use Wikipedia.. The "facts" on there aren't always true. That's why we aren't allowed to use it in my high school.
Answer:
The study of the earth's ecosystems is also part of the physical systems element. This element includes the ways that human actions modify the physical environment. It also considers the affect that physical systems, such as landforms and weather, have on human systems.
The statement, "The main purpose of a forester is to identify land for timber harvesting," is FALSE<span>.</span>
Answer:
B
Explanation:
The mantle is divided into several layers: the upper mantle, the transition zone, the lower mantle, and D” (D double-prime), the strange region where the mantle meets the outer core.
