Ecology Remediation

A disease reduces the number of young salmon in a river. Which population will MOST likely increase as a result?

• trout and eagle

• algae and trout

• sculpin and algae

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Which is a difference between abiotic and biotic factors?

• Abiotic factors are plants and biotic factors are animals.

• Abiotic factors are all living things and biotic factors are all nonliving things.

• Abiotic factors are all nonliving things and biotic factors are all living things.

Decomposers such as fungi, insects, and molds get their energy from __________.

• Water

• Decaying plants and animals

• Fertilizer

• All of the above

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NGSS.MS-LS2-3

A student is developing a model of an ecosystem. Why does she want to include the sun in her model?

• The sun is needed to make the seasons on Earth.

• The sun keeps everything warm on Earth.

• The sun allows plants and animals to be part of the same ecosystem.

• The sun provides the energy for the production of food in the ecosystem.

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NGSS.MS-LS2-3

NGSS.MS-ESS2-1

Use the food chain below to answer the following question:

Forest food chain

trees → bugs→ birds → fox

If the trees are destroyed in a forest fire, what could happen to the rest of the food chain?

• there will be no change in the food chain

• the population of the primary producers will increase

• the population of the consumers will increase

• the population of the consumers will decrease

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NGSS.MS-LS2-1

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Cattle egrets forage (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.

• mutualism
• commensalism
• competition
• parasitism

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A relationship between two organisms in which one organism benefits and the other is unharmed...

• Mutualism 
• Competition
• Parasitsm 
• Commensalism 

When a mosquito bites you, you are the __________ and the mosquito is the  ____________.

• host, hostess
• parasite, host
• host, parasite
• prey, predator

Aphids are tiny insects that live on and eat the leaves of plants, removing vital nutrients from the plants.

• Predation

• Parasitism

• Commensalism

• Mutualism

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NGSS.MS-LS2-1

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Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

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