Question 1 (1 point)
Invasive species are species that have a impact on a given ecosystem.
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![subject](/tpl/images/cats/health.png)
Health, 18.02.2021 18:20 madleneinejessup
Question 1 (1 point)
Invasive species are species that have a impact on a given ecosystem.
Question 1 options:
native, positive
non-native, neutral
non-native, positive
non-native, harmful
Question 2 (1 point)
Select all that apply.
Check all that characteristics of zebra mussels.
Question 2 options:
lives in cool water
the size of a hand
can attach to any surface
filter feeders
Question 3 (1 point)
The zebra and quagga mussels arrived to the Great Lakes in the ballast water of a container ship from:
Question 3 options:
Norway
Europe
Africa
Australia
Question 4 (1 point)
20% of the world's fresh water is found in the Great Lakes.
Question 4 options:
True
False
Question 5 (1 point)
Select all that apply.
In what ways do zebra and quagga mussels change the ecosystem?
Question 5 options:
compete with other organisms for food
consume huge amounts of algae, which leaves little food for other organisms
increase the temperature of the water
lake water becomes clearer, allowing sunlight to penetrate deeper and creating more aquatic plant growth
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Answers: 3
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