1. Sometimes, groups and individuals try to .......... a certain species in a specific habitat. This means that these individuals try to repopulate an area with a certain species because that particular species is threatened or endangered.

2. The .......... in an environment is the plants and animals that inhabit a natural ecosystem.

3. Plants and animals that are at .......... are considered threatened because their very survival is in jeopardy.

4. Some governments have .......... the use of certain pollutants in an effort to save the environment. This means they have disallowed the use of certain chemicals and pollutants.

5. When people who work in the same office or area take turns driving each other to work, rather than take individuals vehicles to work separately, this is called a .......... system.

6. Some lumber companies have to .......... cut certain areas because people need wood for various purposes. This means that they chop down or remove a lot of trees at once from a specific location. However, these companies also have to take part in planting and growing new trees after they have finished their work in that area.

7. Some people are beginning to create and maintain .......... bins. This is when people put food waste, such as vegetables and fruit, as well as newspapers, leaves and other organic trash into a container. Over time, the organic waste will decompose and can then be used to naturally fertilize soils. This practice also cuts down on the amount of garbage that ends up in landfills.

8. Some people cause a lot of pollution by simply .......... to work every day. This is when people have to drive or travel long distances usually into larger centers just to get to work each day.

9. Some families in North America, as well as other parts of the world, are continually trying to .......... less products and resources. In other words, they are trying to use less of the world's resources by making small lifestyle changes at home.

10. Some families and individuals, who have extra funds, often .......... money to particular charities that aim to protect threatened animals and habitats around the world.