Unit B: Ecosystems and Population Change Biology 20

What do you call the population size represented by the dashed-Line

• Carrying Capacity
• Limiting Factor
• Ecosystem
• Death Rate

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

An example of a population is

• all trees in a forest

• all maple trees in a forest

• all plants in a forest

• all animals in a forest

A group of different species that live together and interact in an environment are called a/an ________.

• community

• habitat

• population

• ecosystem

Any thing or organism that regulates the size of a population of another organism is known as __________.

• a measure
• a limiting factor
• factorization
• predation

Temperature, light, air, water, and soil are all  _____  parts of the environment

• alive
• biotic 
• abiotic
• living

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NGSS.MS-LS2-3

Temperature is an example of what kind of factor?

• biotic

• abiotic

• dead

• living

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NGSS.MS-LS2-3

Many fish die due to a drastic change in water temperature.

• Density-Dependent

• Density-Independent

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NGSS.MS-LS2-4

An extensive drought in the plains threatens wildebeest, giraffe, zebra, and springbok populations.

• Density-Dependent

• Density-Independent

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is a density-independent limiting factor?

• natural disaster
• predation
• disease
• parasitism

Darwin said that within a species there will be _________________________

• nothing different
• variation/differences

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NGSS.MS-LS3-2

NGSS.MS-LS4-2

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