Environmental Science 15th Edition by Scott Spoolman,Tyler Miller

تمرين 3

What are the three key concepts for this section? Define environment. Distinguish among environmental science , ecology , and environmentalism. Distinguish between an organism and a species. What is an ecosystem ? What are three scientific principles of sustainability derived from how the natural world works? What is solar energy and why is it important to life on the earth? What is biodiversity and why is it important to life on the earth? Define nutrients. Define chemical cycling (or nutrient cycling ) and explain why it is important to life on the earth.