Why is biodiversity so important?

Because all species depend on each other to survive, so if one becomes extinct another species that relies on it could go extinct as well

Because it’s better to have only one variation of each species.

Because it better to only have a few species on Earth.

Honestly, I have no idea what biodiversity is!

What are some examples of human activities that can have big impacts on ocean ecosystems?

All of the answers are correct.

Fishing, both recreational and commercial

Introduction of invasive species

How does an invasive species affect an ecosystem?

The invasisve species can disrupt biodiversity and food webs by competing with or harming species native to that ecosystem

The invasive species interacts with all of the living organisms in a non-competitive way

The invasive species travels between multiple different ecosystems or habitats to find food

The invasisve species solely depends on birds for its food supply

One constraint of solutions to maintain the health of ecosystems is –

All of the answers are correct.

It can be difficult to control species.

It is sometimes difficult to regulate human activities.

What ecological services do plants provide that help Earth’s biodiversity?

Plants provide all of these ecological services.

Plants help slow the effects of weathering and erosion.

Plants are used to make many medicines that are used to treat diseases in people and animals.

Plants maintain the balance of gases in the air through photosynthesis, supplying oxygen for humans and animals.

The graph above shows the variation in the deer population in the Kaibab Plateau from 1905 to 1939. Between 1907 and 1923, the natural predators of deer were eliminated from the area by hunters. What was the most likely reason for the decline in the deer population after 1924?

The increased number of deer led to increased competition for resources.

The deer stopped competing for resources because they had no predators.

A large number of deer left the region in search of new predators.

The removal of predators caused fewer resources to be available to the deer.

symbiotic relationship where one organism is harmed and one is benefited

symbiotic relationship where both organisms benefit from interaction

symbiotic relationship where one organism benefits and one organism is harmed

What can biodiversity influence within an ecosystem?

how well the ecosystem recovers from a disturbance

how well the ecosystem grows after rain

how poorly the ecosystem responds to a drought

Why does having a polyculture forest compared to a monoculture forest have a higher probability of surviving

In a polyculture forest even if one species of trees is infected with a disease, the other tree species still have the potential to be immune to the disease.

In a polyculture forest there could be multiple diseases instead of just one in a monoculture forest.

In a monoculture forest having the same species of trees helps the soil

In a polyculture forest there are several species of trees which can help the trees survive longer since some trees are older than others.

One way humans can restore the ecosystem would be to...

intentionally sink old ships or barges to create artificial reefs

mow lawns when grass gets too long

intentionally use less gas by walking or biking to work

Ecosystem Biodiversity NOW

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Ecosystem Biodiversity NOW

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Science

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7th Grade

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Practice Problem

•

Medium

•

NGSS

MS-LS2-5, MS-LS2-4, MS-ESS3-3

Standards-aligned

Matthew McLaren

Used 15+ times

FREE Resource

22 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A rainforest has an abundance of different plant an animal species. This is an example of what?

population

biodiversity

conservation strategies

Tags

NGSS.MS-LS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Collecting and reprocessing materials

Terrestrial

Oceanic

Biodiversity

Recycling

Purification

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS3-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pertaining to land on Earth

Terrestrial

Oceanic

Biodiversity

Recycling

Purification

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The cultivation of a single crop in a given area

polyculture

monoculture

inorganic farming

organic farming

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

To make free from pollutants and contaminants

Terrestrial

Oceanic

Biodiversity

Recycling

Purification

Tags

NGSS.MS-ESS3-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If there were fewer insects to pollinate plants on Earth, what would be the biggest concern for humans?

People who work for pest control companies might lose their jobs.

Crops might not get pollinated, and there could be a food shortage.

Honey could become more expensive.

There could be fewer roses available on Valentine’s Day.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Currently sharks are on a rapid decline due to overfishing. If sharks go extinct will this affect the biodiversity of the ocean?

No, sharks are not important.

No, sharks will only affect the seal populations.

Yes, it will disrupt the entire food chain in the ocean.

Yes, but only a little.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

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22 questions

A rainforest has an abundance of different plant an animal species. This is an example of what?

Collecting and reprocessing materials

Pertaining to land on Earth

The cultivation of a single crop in a given area

To make free from pollutants and contaminants

If there were fewer insects to pollinate plants on Earth, what would be the biggest concern for humans?

Currently sharks are on a rapid decline due to overfishing. If sharks go extinct will this affect the biodiversity of the ocean?

Why is biodiversity so important?

What are some examples of human activities that can have big impacts on ocean ecosystems?

What factor does NOT affect biodiversity?

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