Carbon In The Ecosystem

Earth is a closed system, so the amount of carbon _______ over time.

• stays relatively constant

• increases

• decreases

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Dead matter that has been buried deep underground for a long time may form fossil fuels, which can be burned to power things people need.

• True

• False

Burning fossil fuels adds more carbon dioxide to Earth’s atmosphere, increasing carbon in abiotic matter and _______ carbon in biotic matter.

• increasing

• decreasing

Tags

NGSS.MS-LS2-3

In a closed ecosystem, carbon ______ be produced or used up.

• will

• can

• cannot

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

The amounts of carbon in the different parts of an ecosystem ____ change, but the total amount of carbon in a closed ecosystem _____ constant.

• can

• can't

• remains

• isn't

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

The processes of photosynthesis and cellular respiration move carbon from _____ to biotic and from biotic to _____ parts of an ecosystem.

• abiotic

• biotic

• living

• animals

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Since carbon cannot be produced or used up, the total amount of carbon in a closed ecosystem ________.

• will change

• does not change

• increases

• decreases

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

If the amount of carbon ______ in abiotic matter, then it also decreased in biotic matter. If the amount of carbon ______ in abiotic matter, then it also increased in biotic matter.

• increased

• decreases

• stays the same

• can't change

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

A ______ is why something happened

• reason

• effect

• cause

A(n) is what happened.

• cause

• effect

• response

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4