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Ecosystems and elements

Authored by Richard Melton

Chemistry

7th Grade

Used 102+ times

Ecosystems and elements
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26 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

________ is needed to break the bonds of glucose releasing energy throughout the cell.

hydrogen

oxygen

carbon

chlorine

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

_____ makes up 1% of our body and is found in our teeth, bones, and in nucleic acids.

oxygen

sulfur

sodium

phosphorus

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Water is made up of _____ and ______ .

hydrogen and oxygen

hydrogen and nitrogen

potassium and oxygen

hydrogen and carbon

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Carbon dioxide enter the plant through the ____ .

roots

stem

stomata

flower

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

_________ is the waste product of cellular respiration.

hydrogen

carbon dioxide

potassium

oxygen

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

______ is a type of symbiosis where both organisms benefit.

parasitism

mutualism

commensalism

beneficialism

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

_______ is the vine that ate the south. It is an invasive species because it is not native to the area.

legumes

crab apple

Tumble weeds

kudzu

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