BW for the week of 10/15• On the front of your paper define: genus,

species, classification, adaptation, engineering, technology, prototype, natural selection

• On the back of your paper: write a scientific story that uses all of these vocabulary words correctly. Underline each vocabulary word in your story.

• This is due on Friday, October 19. We will take the vocab quiz after this is turned in

Chapter 6

Environmental Problems & Solutions

• Pollution• An unwanted change in the environmentcaused by substances, such as wastes, orforms of energy, such as radiation, is calledpollution.•Anything that causes pollution is called apollutant.•Some pollutants are produced by naturalevents, such as volcanic eruptions. Manypollutants are human-made. Pollutants mayharm plants, animals, and humans.

• Objective• List five kinds of pollutants.• Garbage - This trash often goes to a landfill.• Chemicals - The same chemicals that helppeople may harm the environment.• High-Powered Wastes - Nuclear power

plantsproduce radioactive wastes.• Gases – Due to more human technologies,

suchas cars, more CO2 is in the atmosphere• Noise - affects your ability to hear and thinkclearly, and it may damage your hearing.

• Objective

• Distinguish between renewable and nonrenewable resources.

• A renewable resource is one that can be replaced at the same rate at which the resource is used..

• A nonrenewable resource is one that

cannot be replaced or that can be replaced only over thousands or millions of years.

• Renewable or Nonrenewable?• Scientists used to think that

fresh water was a renewable resource. However, in some areas, water supplies are being used faster than they are being replaced.

• Scientists are working on ways tokeep these water supplies from

beingused up.

• Objective• Describe the impact of exotic species.•People may carry plant seeds, animalseggs, or adult organisms with them asthey move from one part of the world toanother.• An organism that makes a home for

itselfin a new place outside its native home isan exotic species. Exotic species oftenthrive in new places, and can becomepests and compete with native species.

• Objective• Explain why human

population growth has increased.

•Advances in medicine, such as immunizations, have made human population growth possible.

•Advances in farming have also made human population growth possible.

• Objective• Describe how habitat destruction affects

biodiversity.• When land is cleared for construction,crops, mines, or lumber, organisms thatwere living in the areas may be leftwithout food and shelter. These organismsmay die.• An organism’s habitat is where it lives.Every habitat has a number and variety oforganisms, or biodiversity. If a habitat isdamaged or destroyed, biodiversity is lost.

• Habitat Destruction, continued•Forest Habitats Trees provide humans with oxygen,

lumber, food, rubber, and paper. For some of these products, trees must be cut down. Deforestation is the clearing of forest lands.

• Marine Habitats Many people think of oil spills when they

think of pollution in marine habitats. Spilled oil pollutes both open waters and coastal habitats. In addition to oil, chemicals and plastics are sometimes dumped into marine habitats.

• Objective• Give two examples of how

pollution affects humans.1. Polluted air affects people withrespiratory problems.2. Polluted drinking water makespeople sick. Some chemicals thatpollute water cause cancers manyyears after exposure to them.

• Objective•Explain the importance of conservation.

•Conservation is the preservation and wise use

of natural resources.

•Objective•Describe the three Rs.• The three R’s describe three ways to conserve resources:

•Reduce, Reuse, and Recycle.

• Objective• Explain how biodiversity can be

maintained.• Protecting Species One way to

maintain biodiversity is to protect individual species. In the United States, a law called the Endangered Species Act was designed to do just that.

• Protecting Habitats Each organism is part of a huge, interconnected web of organisms. The entire web should be protected to protect these organisms.

•Objective•List four environmental strategies.

• Reduce pollution.• Reduce pesticide use.• Protect habitats.• Develop alternative energy sources.