Science and the Environment Part 3
Lesson Plan

1. What are the two ways ecosystems experience changes?
Ecosystems can experience slow and rapid changes.
2. What are some examples of how natural weather disasters can cause rapid
changes? hurricanes, tornadoes,thunderstorms, fires.
3. What is erosion? Erosion is when the surface of the earth is worn away.
4. What affects the ecosystem more than any other living thing? Humans
5. What are some ways humans affect the environment?
1. They cut down forests.
2. They use chemicals in the wrong way, sometimes causing oil spills which can harm fish.
3. They burn fuels that can damage the earth's atmosphere. This causes the Greenhouse effect.
6. What are two types of resources in the environment?
They are renewable and nonrenewable resources.
7. Renewable resources can be replenished by natural processes.
Example of renewable resources are plants, water, oxygen.
8. Nonrenewable resources cannot be replaced in a reasonable time.
Examples of nonrenewable resources are metals and petroleum products.
9. Conserve means to use things in small amounts or to protect things.
10. Endangered means a living thing is in danger of dying out. There are few of them left.
11. The burning of fossil fuels like oil and coal cause greenouse gases to escape into the air and these gases are causing warming of the earth. This effect is called the Greenhouse Effect.
12. Give an example of how animals can be affected by rapid changes to their
Environment. The Louisiana Black Bear is an example of an animal on the endangered species list due to changes made in the ecosystem.
13. What is causing global warming and the Greenhouse Effect?
The burning of fossil fuels like oil and coal cause greenhouse gases to escape into the air. Another cause is deforestation (cutting down trees). Trees soak up carbon dioxide.