Ecosystems, Group Behavior, Competition Review

An ___ is a community of interacting organisms and their environment.

• adaptation

• ecosystem

• invasive species

• organism

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If the needs of the organisms are not met, the ___ of the ecosystem can be destroyed.

• camouflage

• adaptations

• economy

• balance

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Animals work together in groups to help them _____.

• survive

• grow

• reproduce

• all of these

If a tall tree falls over in a crowded forest, which resource becomes available to the surrounding plants?

• air

• soil

• water

• sunlight

Tags

NGSS.MS-LS2-1

Both harbor seals and gray seals can be found on Sable Island in the Atlantic Ocean. As scientists have studied the island, they have noticed an increase in the population of gray seals. They have also noticed the population of harbor seals has decreased. Which MOST likely caused the decrease in the population of the harbor seals?

• change in ocean temperature

• an increase in rainfall on the island

• competition for food between the seals

• change in the type of food eaten by the seals

Tags

NGSS.MS-LS2-1

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The main source of food for a coyote population in one area is mice. Which is MOST likely to happen to these coyotes if a new predator begins eating the mice?

• There will be fewer coyotes.

• The coyotes will produce more young.

• More coyotes will arrive from other locations.

• Each coyote will spend less time hunting food.

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7. Which statement BEST explains why few plants grow on a tropical rainforest floor?

• Heavy rains fall throughout the year.

• Temperatures in a tropical rainforest stay warm.

• Many different kinds of animals live on a rainforest floor.

• Layers of trees keep sunlight from reaching the forest floor.

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The gray myotis is a type of bat found in Florida. Gray myotis bats are flying mammals that live close together in caves. The bats leave the cave each night to hunt for insects. If another population of bats arrived, for which resource in the cave would gray myotis bats MOST likely compete with the other bats?

• air

• water

• space

• sunlight

Tags

NGSS.MS-LS2-1

A species is ___ when it is at risk of extinction.

• thriving

• threatened

• endangered

• extinct

An organism is ___ when it may become endangered in the near future.

• thriving

• threatened

• endangered

• extinct