| A | B |
|---|
| Natural resources. | parts of Earth's enviroment, such as water and minerals that are used by living organisms. |
| Renewable resources. | natural resource that can be replaced by natural processes within 100 years or less. |
| Nonrenewable resources. | natural resource that cannot be replace by natural processes within 100 years or less. |
| Landfill. | is an area where garbage is deposited. |
| Pollutant. | any material that can harm living things by interfering with life processes. |
| Acid rain. | form of pollution that occurs when gases released by burning oil and coal mix with water in the air to form rain or snow that is strongly acid. |
| Solid waste. | solid or near-solid items disposed of as a garbage. |
| Recycling. | reusing materials after they have been changed into another form,instead of throwing them away. |
| Give examples of nonrenewable resources. | oil, coal |
| Using an old newspaper to line a pet cage is an example of... | reusing |
| Collecting used paper and sending it to a factory to be made into new paper is an example of... | Example of recycling |
| Breathing polluted air may cause... | health problems |
| A life-cycle analysis of a product indicates.... | all resource and energy use |
| Turning off unneeded lights is an example of... | reducing resources used |
| Paper, crops, and wood are examples of what type of resources? | these are renewable resources |
| Dumping used motor oil on the ground could create | this could cause water pollution |
| Why, if people use so many paper products, don't we run out of trees? | Trees are a renewable resource. |
| Explain why almost 70 percent of Earth's surface is covered by water, but less than one percent can be used by people. | Most salt water cannot be used by people unless the salt is removed. |
| How can a landfill be an environmental problem even though people are no longer despositing trash there? | Pollutants from the landfill can leak out and enter the groundwater and other parts of the environment. |
| How might taking your own grocery bags to the store affect natural resources? | The need for new materials is reduced. |
| Examples of renewable resources. | sunlight, water, air, and soil |
| Organisms. | any living thing;uses energy,is made of cells,reproduces,responds,and grows. |
| Adaptation. | any variation that makes an organism better suited to its environment. |
| Population. | is a group of the same type of organisms living in the same place at the same time. |
| Community. | the members of a community depend on each other for food shelter and other needs. |
| Limiting Factors. | populations cannot grow larger and larger forever. |
| Niche. | the role of organism an ecosystem is called the organism niche. |
