Resources in Ecosystem

Which of the following is an example of a limiting factor in an ecosystem that can reduce carrying capacity?

• Increased availability of food

• Decrease in competition between species

• Change in temperature that favors population growth

• Lack of sufficient water supply

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Any material or energy needed by living things to survive, grow, and reproduce.

• Supplies

• Resource

• Equipment

• Plants

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NGSS.MS-LS2-1

A group of populations of living things and the nonliving parts of their environment that support them.

• Ecosystem

• Biome

• Biosphere

• Community

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NGSS.MS-LS2-1

Humans accidentally brought a new predator to an island ecosystem, brown tree snakes. These snakes eat bird eggs and adult birds, including Doves. This graph shows the Dove population from 1976 to 1998. Which statement about the Dove population is true, based on the data?

• Brown tree snakes prey on the Doves, causing an increase in their population.

• Brown tree snakes are mutualists with the Doves, causing an increase in their population

• Brown tree snakes prey on the Doves, cause a decline in their population.

• Brown tree snakes have a commensal relationship with the Doves, causing a decrease in their population.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

This graph shows the impact that zebra mussel have on water clarity in a river. Water clarity is a measure of how deeply light can reach into the water. Based on the graph, which statement is true?

• Water clarity is highest closer to the zebra mussel population.

• Water clarity is lowest closer to the zebra mussel population.

• Water clarity is highest farther away from the zebra mussel population.

• Water clarity is lowest at 8 kilometers away from the zebra mussel population.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

An organism that is killed and eaten by another organism

• Predator

• Prey

• Competition

• Adaptation

Which of the following is the best example of mutualism?

• a dog steals a bone from another dog

• a tiger hunts and eats a deer

• a bird eats ticks from a zebra's skin

• a bee stings a jogger

Cattle egrets feed in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not. This relationship is an example of

• mutualism

• commensalism

• competition

• parasitism

When this isopod enters the fish through its gills, consumes the fish's tongue, then replaces the tongue, it is acting as a

• predator

• prey

• parasite

• friend

The parts of Earth in which organisms are able to live

• Biosphere

• Hydrosphere

• Pedosphere

• Atmosphere

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NGSS.MS-ESS2-1