2.8 Biotic & Abiotic Influences on Ecosystems

_{What is the carrying capacity of the graph?}

• around 500
• more than 500
• less than 500
• around 600

Which of the following would INCREASE the carrying capacity of an ecosystem?

• increase in predators
• disease
• increase in available food
• drought

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is an EXAMPLE of a limiting factor?

• Water
• the color of the sky
• Migration
• Thick fur

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NGSS.MS-LS2-1

Which of the following is an example of competition?

• Two vultures fight over a dead rabbit
• A bear eats a fish
• Birds migrate south
• Pet dog keeps a man company

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NGSS.MS-LS2-2

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_{When a population grows past the ecosystem's carrying capacity, what happens to the population?}

• Continues to grow
• The population starts to die off to return to carrying capcity
• The population will go extinct due to lack of resources
• The population grows then finds a new carrying capacity

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NGSS.MS-LS2-1

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A relationship between two species where one benefits while the other is harmed.

• Mutualism
• Commensalism
• Parasitism
• Naturalism

What best describes the relationship between bees and plants.

• mutualism
• parasitism
• neutralism
• commensalism

A tapeworm and a cat have this type of relationship.

• mutualism
• parasitism
• commensalism
• competition

Red-billed oxpeckers  feed on parasites found on an Impala. The impala gets rid of parasites and the red-billed oxpeckers get yummy dinner. This is an example of _______.

• commensalism
• mutualism
• neutralism
• competition

A tree blocks the light from the grass below. This is an example of _________.

• mutualism
• commensalism
• competition
• parasitism

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NGSS.MS-LS1-5

NGSS.MS-LS2-1