Biomagnification & Human Impacts

Scientists think people have directly caused the extinction of some species through ______________.

• habitat destruction

• removal of species

• pollution

• All of these

what is the leading cause of deforestation?

• Diseases

• species competition

• Agriculture and Farming

• Paper mill

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.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

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 

Tags

CCSS.RI. 9-10.2

CCSS.RI.11-12.2

CCSS.RL.11-12.2

CCSS.RL.8.2

CCSS.RL.9-10.2

Toxins accumulate in the tissues of organisms as they pass through a food chain/web.

• eutrophication

• biomagnification

• ecological succession

• symbiosis

Which trophic level in a food web would accumulate the LEAST amount of a toxin, such as methylmercury or DDT?

• autotrophs
• primary consumers 
• herbivores
• secondary consumers 

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

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

NGSS.MS-LS2-1

NGSS.MS-LS2-2

What effects does infrastructure (building of freeways etc.) have on the environment? Check all that apply.

• Fragmentation of habitat

• Easier for animals to travel long distances

• Decrease the risk of floods

• Block migration routes

Which organism in the food web would

contain the highest concentration of chemical pollutants?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

Identify the process shown in this diagram.

• Extinction
• Toxin Accumulation
• Pollution
• Biomagnification

Tags

NGSS.HS-LS4-5