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

• 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.

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

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Resources

• Relating to the ocean

• The proper disposal of used resources so they can be reprocessed into new products

• The number of different species of plants and animals in an area

• Source or supply from which benefit is produced

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Biodiversity

• The proper disposal of used resources so they can be reprocessed into new products

• The number of different species of plants and animals in an area

• Source or supply from which benefit is produced

• Relating to the ocean

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Relating to the ocean

• Biodiversity

• Resources

• Recycling

• Oceanic

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

• All of the above

• Introduction of invasive species

• Fishing, both recreational and commercial

• Pollution

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One constraint (restriction or obstruction) of solutions to maintain the health of ecosystems is –

• It is expensive.

• It is sometimes difficult to regulate human activities.

• It can be difficult to control species.

• All of the above

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Recycling

• The number of different species of plants and animals in an area

• Source or supply from which benefit is produced

• Relating to the ocean

• The proper disposal of used resources so they can be reprocessed into new products

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What is NOT an example of an ecological service that animals provide, which in turn helps Earth’s biodiversity?

• Snakes, foxes, and other predators eating pests like mice so they do not invade people’s homes as much

• Bats, birds, and other insects eating mosquitoes, which bite people and spread diseases

• Animals, such as insects, birds, and bats, pollinating flowers

• Dogs barking at intruders

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

• 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 provide all of these ecological services.

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

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The ecosystem with the greatest biodiversity is the one that has the greatest:

• variety of living things.

• average annual rainfall.

• coverage of land area.

• elevation above sea level.

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