Human Impact

What is Deforestation?

• A forest in which there are too many deers.
• A forest party where deers hang out
• The adding of trees in a forest.
• The clearing of trees; transforming of a forest into cleared land.

Where is pollution found on the earth?
 
 
  

• only in the air 
• only on the land 
• only in the water 
• on land, in the air, and in the water 

Which way can people best reduce land pollution caused by large amounts of waste dumped in landfills?  

• They can use a water filter to use fewer water bottles.
• They can recycle their plastic, glass, paper, and cardboard items and only throw away non-recyclable items.
• They can watch less television, reducing electricity use and allowing their electronics to last much longer.
• They can refill large plastic containers, like those used for laundry detergent, instead of throwing them away.

What do we call it when an ecosystem is able to maintain its structure and be stable over time?

• It is dependable.
• It is sustainable.
• It is independent.
• It is adaptable.

Which of the following is a finite resource?  

• solar energy 
• wind energy
• trees
• fossil fuels 

Which of the following results when levels of CO₂ in the atmosphere increase due to fossil fuel burning?

• ecological succession 
• acid rain 
• ozone depletion
• global warming

What effects does over-hunting have on an ecosystem?

• It increase the population of the hunted species

• It disrupts the food chain

• It feeds humans

• It improves the ecosystem

Is hydroelectric power a renewable form of energy?

• Yes

• No

1. What is one of the greatest threats to biodiversity on Earth?

• habitat destruction

• loss of drinking water

• decrease in food supply

• pollution

Name Two examples of Nonrenewable resources?

• Coal and Oil
• Biomass and Wind Turbines
• Tidal and Geothermal