Science Category

In this food chain, what will happen if the frogs become extinct?

• The snakes will increase.

• The grasshoppers will decrease.

• The eagles will remain the same.

• The grasshoppers will increase.

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NGSS.MS-LS2-1

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How would a reduction in the snail population effect this ecosystem?

• It would cause decreased competition between spiders and owls.

• It would cause decreased competition between spiders and wood mice.

• It would cause increased competition between grasshoppers and beetles.

• It would cause increased competition between wood mice and shrews.

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NGSS.MS-LS2-1

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NGSS.MS-LS2-4

What is the primary source of energy for most ecosystems?

• Wind

• Thermal vents

• The Sun

• Decomposition

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NGSS.MS-LS1-6

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In a food chain, which type of organism receives energy directly from the sun?

• Carnivores

• Herbivores

• Producers

• Decomposers

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NGSS.MS-LS1-6

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Which of the following best describes the role of decomposers in an ecosystem?

• They produce their own food through photosynthesis.

• They consume living plants and animals.

• They break down dead organisms and recycle nutrients back into the soil.

• They are the primary consumers of producers.

Tags

NGSS.MS-LS2-3

In terms of energy flow in an ecosystem, what is typically true about energy as it moves up the food chain?

• It increases at each trophic level.

• It remains constant throughout the food chain.

• It decreases at each trophic level.

• It is recycled back to the producers at each trophic level.

Tags

NGSS.MS-LS2-3

What factor most directly affects the population size of a species in an ecosystem?

• The coloration of the species

• The amount of available food

• The number of different species in the ecosystem

• The average temperature of the ecosystem

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the primary reason for the loss of biodiversity?

• Natural disasters

• Habitat destruction by humans

• The introduction of non-native species

• All of the above

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NGSS.MS-ESS3-4

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What role do plants play in the water cycle within an ecosystem?

• They store water in their roots, preventing it from entering the water cycle.

• They release water vapor into the atmosphere through transpiration.

• They absorb water vapor directly from the atmosphere, bypassing the soil.

• They have no significant role in the water cycle.

Tags

NGSS.MS-ESS2-4

Every living organism is made up of one or more cells

• True

• False

Tags

NGSS.MS-LS1-1