AB Science

Which of the following is a biotic factor within an ecosystem?

• Herivores that feed on producers

• Climate in the region

• Amount of oxygen in the air

• Amount of sunlight

Which of the following is an example of an abiotic factor affecting a biotic factor?

• The wolf population increases due to an increase in the deer population

• The sea lion population decreases due to a lack of food

• The temperature in a region increases due to an increase in sunlight

• An extreme drought causes the population of grass to decrease

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NGSS.MS-LS2-4

• The whelk competes with the loggerhead turtle for mackerel.

• The clams and zooplankton compete with the mackerel for phytoplankton.

• The tiger shark competes with the tuna for the mackerel.

• The squid competes with the herring for clams.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

According to the food web above, what would be the most likely outcome if all of the mountain lions were removed from this ecosystem?

• The deer population would increase due to the lack of predation.

• The deer population would increase due to the lack of predation and the racoon population would decrease because they lost their only food source.

• The turtle population would increase due to the lack of predation.

• The egret population would increase due to the lack of predation.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

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Which of the following is an example of a long-term environmental change?

• A hurricane

• Forests thinning out to grassland due to less yearly rainfall and higher temperatures.

• A factory polluting a nearby lake, reducing aquatic wildlife

• A flood

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

In a farm ecosystem, a farmer starts using a certain pesticide to protect his crops. A species of cricket is especially susceptible to this pesticide and most of the population dies off. What type of environmental change is this?

• It is a short-term environmental change.

• It is a long-term environmental change.

• It is not an environmental change.

• . It is a short-term and long-term environmental change.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is an example of a short-term environmental change?

• Subduction of one tectonic plate beneath another

• Erosion of a coastline

• Deposition of sediments in a river

• Severe lack of rainfall during a drought

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How are populations affected by long-term environmental changes?

• They generally become extinct due to the changes that take place

• They increase in number due to the changes that take place

• The adapt to the changes that take place gradually over time.

• They are not affected by the changes that take place

Tags

NGSS.MS-LS2-4

Which of the following is NOT an abiotic factor represented in the picture?

• Dirt

• Sunlight

• Dead grass

• Air

Tags

NGSS.MS-LS2-1

How does the lion pictured depend on other biotic factors for survival?

• Food Source

• Protection

• Warmth

• Shelter

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4