Lab: Disease Spread — Unit test Answers

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How could the loss of biodiversity affect humans?

A
It may cause an increase in the human population as competition is reduced.
B
It may lead to the loss of potential medicines, foods, and products.
C
It could lead to a decrease in infectious and other diseases that affect humans.
D
It could cause a decrease in the amount of pollutants on the planet.
3

How does conservation affect biodiversity?

A
It helps to preserve climate change.
B
It decreases species diversity.
C
It helps to preserve biodiversity.
D
It decreases ecosystem diversity.
4

Which of the following could result in secondary succession?

A
the formation of a tall sand dune on a previously grassy beach
B
a vast glacier in motion forming a U-shaped valley in its wake
C
a volcanic eruption that covers most of what used to be a forest
D
an introduced species that destroys all the native plants in an area
5

Which biome contains permafrost?

A
tropical rain forest
B
temperate rain forest
C
savanna
D
tundra
7

Which shows the levels of organizational hierarchy listed from least complex to most complex?

A
population, community, ecosystem
B
ecosystem, population, community
C
community, population, ecosystem
D
community, ecosystem, population
8

Which describes a disruption in the water cycle that could affect photosynthesis?

A
Heat causes an excess of transpiration.
B
Heat causes an excess of evaporation.
C
Heat causes an excess of condensation.
D
Heat causes an excess of precipitation.
14

Which answer gives both a positive impact and a negative impact associated with the effects of nitrogen- and phosphorus-enhanced fertilizers?

A
increased algal blooms and damage to drinking water
B
increased plant growth and damage to drinking water
C
increase in denitrifying bacteria and increase in plant growth
D
increase in a limiting resource and increase in denitrifying bacteria

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