Ecology 2 - Human Impact

The phenomenon by which toxins concentrate in the organisms at higher trophic levels within an ecosystem is known as...

• Biotoxicity

• Biomagnification

• Eutrophication

• Predation

Consider the following food chain:

Algae > Mayfly > Minnow > Trout

In a polluted ecosystem, which organism would likely have the HIGHEST level of toxic chemicals in its body?

• Algae

• Mayfly

• Minnow

• Trout

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NGSS.MS-LS2-4

When taken to a new habitat, non-native plants often threaten native plants of the new habitat.  Why do they do this?

• Non-native plants are able to mutate rapidly
• Non-native  plants cause native animals to relocate
• Non-native plants are able to be used for medicine
• Non-native plants compete with native plants for resources

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NGSS.MS-LS2-1

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Kudzu has overgrown many parts of southern Missouri and native ground plants have disappeared from the area. This is an example of:

• Parasitism between kudzu and the native plants
• A predator prey relationship between ground plants and kudzu
• Competition occurring between the native and invasive species
• Commesalism occurring between the kudzo and native plants

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Which is a MAJOR cause of acid rain?

• spraying pesticides on crops

• burning fossil fuels for energy

• dumping sewage in rivers

• using Nuclear power stations

Acid rain can damage

• Drinking water sources

• Aquatic (water) life

• Architecture / buildings

• All options are correct

Tags

NGSS.MS-LS2-4

What is deforestation?

• Clearing Earth's forests on a massive scale
• Eating too much vegetables
• Going to a forest and pulling weeds
• Clearing the five trees in my backyard

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Deforestation causes an increase in atmospheric carbon dioxide

• true

• false

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What are the effects of deforestation ?

• loss of habitat
• increased green house gasses 
• soil erosion and flooding
• all of the above

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Does deforestation contribute to global warming?

• No, trees aren't that important
• Sometimes because only the cutting down of Maple trees contributes to global warming
• No, deforestation adds methane to the atmosphere, which makes the Earth cooler
• Yes; less trees means less CO2 is turned into oxygen.

Tags

NGSS.MS-ESS3-5