Passage
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The Nitrogen Cycle
science · RI.4.4+1
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“nitrogen oxides” worksheets and activities
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Grades 5–8
Nitrogen Cycle
life science · MS-LS2-3
$1.50
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Grades 3–8
What causes Acid rain
physical science
$1.50
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Grades 6–8
How Do Smog and Acid Rain Affect Living Things
earth and space science · MS-ESS3-3
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Passage
Grade 6
What Is The Most Abundant Gas In The Atmosphere
earth and space science
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Passage
Grades 5–8
What Gases Make Up Air
weather and climate · MS-ESS2-5
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Grades 6–8
How Matter Cycles Through Earth Systems
earth and space science · MS-ESS2-1
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Grades 6–8
How Do Silicate and Nonsilicate Minerals Differ
earth and space science · MS-ESS3-1
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Grades 6–8
How Humans Disrupt Earth's Cycles
earth and space science · MS-ESS2-1
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Grades 5–8
Why Mars Is Red
earth and space science · MS-ESS1-3
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Passage
Grade 6
Archaea
life science
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Passage
Grades 5–8
Nonmetals on the Periodic Table
physical science · MS-PS1-1
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Grades 4–6
Rusting Is Chemical Change
physical science · 5-PS1-4
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Grades 5–8
What Is Air Made Of
weather and climate · NGSS MS-ESS2-5+1
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Grades 6–8
What Is Air Pollution
earth and space science · MS-ESS3-3
$1.50
Passage
Grades 3–8
Why Are Anthropogenic Greenhouse Gases Important?
weather and climate
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Passage
Grades 5–8
Groups Containing Metalloids
physical science · MS-PS1-1
$1.50
Passage
Grades 5–8
Bacteria
life science · MS-LS4-2+1
Free
Passage
Grades 5–8
Hydrogen Bonds
physical science · MS-PS1-1
$1.50
Passage
Grades 5–8
Why Auroras Light Up the Sky
earth and space science · MS-ESS2-1
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