Question

A) Direct ecosystem services include benefits such as (1 point)
photosynthesis.
transportation
soil decomposition.
recreational parks.
A) What is the definition of ecological resistance? (1 point)
an ecosystem’s ability to endure in changing conditions
an ecosystem’s ability to manage population density
an ecosystem’s ability to improve after a setback
an ecosystem’s ability to replace species that are wiped out

Question 3
Question 4
A) Which ecosystem service do decomposers provide? (1 point)
nutrient cycling
food production
soil creation
water cycling
A) Which statement is true? (1 point)
Insects can delay the decomposition process.
Composting speeds up the decomposition of organic material.
Organic material will not decompose without the help of composting.
Decomposition only involves microorganisms like bacteria.

Question 5
Question 6
A) How do traditional food production practices contribute to a reduction in biodiversity? (1 point)
Air, land, and water are used to produce food, so food that is thrown away is a waste of those original resources.
Livestock raised for meat are not as diverse as wild species.
Land that is converted to agriculture is no longer a suitable habitat for native species.
Agricultural crops are not a good source of food for wild or native species.
A) Which option would be the best way to reuse food waste? (1 point)
compost scraps for fertilizer
feed scraps to livestock
incinerate scraps to make space
convert scraps to biofuel

Question 7
Question 8
A) Aside from killing native species, what other negative issue might an invasive species present? (1 point)
They might introduce other organisms, like viruses and bacteria.
They might avoid interacting with other organisms.
They might increase the diversity of native species.
They might provide economic benefit.
A) What happens after coral is bleached? (1 point)
The coral produces peroxides.
The coral is susceptible to starvation.
The coral releases algae on to a sand dune.
The coral dies immediately.

Question 9
Question 10
A) The most biodiverse ecosystem in the world is likely a (1 point)
coral reef.
tundra.
cold desert.
taiga.
A) Marine biologist Dr. James Estes researched sea otters and their habitats in the Aleutian Islands of the North Pacific Ocean.
Sea otters feed on animals such as crabs and urchins. Islands with sea otters contained a lot of kelp, a seaweed that is an
important food source for fish and other sea animals. However, Islands without otters had large populations of urchins but no
kelp since sea urchins feed on this seaweed. Since sea otters are able to control the population of urchins, this allows for kelp
to freely grow in those areas. Given this information, what term best describes the otter in the Aleutian Islands ecosystem?
(1 point)
apex predator
producer
keystone species
decomposer

Answer 1

1) Recreational parks.

2) An ecosystem’s ability to endure in changing conditions.

3) Nutrient cycling.

4) Composting speeds up the decomposition of organic material.

5) Land that is converted to agriculture is no longer a suitable habitat for native species.

6) Compost scraps for fertilizer.

7) They might introduce other organisms, like viruses and bacteria.

8) The coral is susceptible to starvation.

9) Coral reef.

10) Keystone species.