Biodiversity Stemscopedia

What is biodiversity?

• the number of different species living in an ecosystem.

• The number of the same species living in an ecosystem.

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What is extinct?

• Describes a species that has completely died out.

• Describes a species that one generation dies.

• Describes when a species completely takes over the ecosystem.

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What does an area of greater biodiversity have?

• Greater number of native species living in the ecosystem.

• More species will be able to survive a disaster such as fire and drought.

• Be more resilient to harmful events such as disease outbreaks.

• All of the above.

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How do people rely on Earth's oceans?

• Goods and products transported between countries by shipping.

• Minerals such as gold, silverm metal ores and oil are mined from the ocean floor.

• Eat a great deal of ocean life as food, and harvested from oceans.

• All of the above.

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What is an estuary?

• A small pond.

• A large lake

• Coastal water bodies that recieve river flow and open into the ocean.

• Frozen body of water.

What human activies have modified Earth's ocean systems?

• Water pollution

• Chemicals and harmful substances in the water

• Runoff from farms.

• All of the above.

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What does psticide runoff do to marine organisms?

• Cause populations of bacterial and algal populations to explode.

• Give populations in the ocean a new source of food

• Increase predators in the populations

• Increase the amount of oxygen in the water.

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What is an artificial reef?

• A way for humans to restore the ecosystem.

• Human-made underwater structures that promote marine life by providing surfaces for marine plants amd animals to attach to on the ocean floor.

• Support complex food webs and made out of old objects such as oil rigs.

• All of the above

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How can you restore the ecosystem damage?

• Reduce

• Reuse

• Recycle

• All of the above

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What are examples of rapid changes to an environment?

• hurricane and flood

• volcano

• earthquakes

• All of the above

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