Cycling of Matter

Producers obtain their energy by

• the process of hunting for prey

• the process of eating plants

• the process of photosynthesis to make their own food from sunlight

• the process of breaking down once living things

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NGSS.MS-LS1-6

All living parts of an ecosystem (plants, animals, and decomposers) are depend on one another for

• food

• energy

• cycling matter

• food, energy, and the cycling of matter

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Decomposers are important to ecosystems because they

• return vital nutrients to the ecosystem
• capture energy from the Sun
• are producers
• can be omnivores

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What are the products of photosynthesis?

• Carbon dioxide and water
• Carbon dioxide and oxygen
• Glucose and oxygen
• Glucose and water

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A consumer gets energy by

• absorbing sunlight.
• breaking down dead organisms.
• soaking it up from the ground.
• feeding on other organisms.

The cycling of matter is important because

• Matter can be created and destroyed
• Only a limited amount of matter is available so it has to be recycled
• Matter can only be found in a solution
• Bacteria use matter to convert organisms into solar energy

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During photosynthesis plants take in _____________________.

• oxygen

• glucose

• carbon dioxide

• water

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Fossil Fuels are part of which of these cycles? 

• carbon

• oxygen

• nitrogen

• phosphorus

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Bacteria are important in the nitrogen cycle because they __________________________.

• produce sugars that plants can use

• decay and eventually form fossil fuels

• respire, returning carbon dioxide into the atomosphere

• help convert nitrogen into a form that organisms can use

Describe the nitrogen cycle?

• Nitrogen fixing bacteria in soil change Nitrogen into nitrogen compounds

• nitrogen compounds in animal waste products are returned to the soil

• Certain types of bacteria can turn nitrogen gas into ammonia through a process called nitrogen fixation

• All of the above

Tags

NGSS.MS-LS2-3