The key insight of ecosystems ecology was to recognize that energy ______ they system, and materials ________ the system

Fill in the blank(s) with the appropriate word(s).


Answer: flows through, cycle within

Environmental & Atmospheric Sciences

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The "Classical" civilization in the Americas was the

A. Cherokee B. Cahokia C. Mayan D. Patagonian

Environmental & Atmospheric Sciences

In a ________ plate boundary, lithosphere is neither created nor destroyed. Fill in the blank(s) with the appropriate word(s)

Environmental & Atmospheric Sciences

To compare the scale of Europe to that of North America, draw a circle 500 miles (800 kilometers) around Frankfurt, Germany. Then do the same for Chicago. This distance is about a day's journey by car from each of the two cities

What does this exercise tell you about the differences in scale and social geography between the two regions?

Environmental & Atmospheric Sciences

One class of pollutants that can cause excessive growth of algae is

a. radioactive substances b. oxygen-demanding wastes c. plant nutrients d. organic chemicals e. Sediment

Environmental & Atmospheric Sciences