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    Answer 3 out of 4 questions correctly.

Carbon is the fourth most abundant element in the universe. Carbon is made by stars and is found in planets, comets, and other celestial objects.
On Earth, carbon is present in and moves between several reservoirs, or
spheres.
  • Most of Earth's carbon is stored in the
    geosphere,
    which includes all of Earth's rocks and minerals.
  • Large amounts of carbon-based acids and salts are dissolved and stored in the
    hydrosphere,
    which includes all of Earth's water.
  • Many carbon-based gases can be found in the
    atmosphere,
    a layer of gases surrounding Earth's surface.
  • Carbon is also present in the
    biosphere,
    which includes all living things on Earth.
Match each Earth sphere to the carbon-based matter it contains.
hydrosphere
atmosphere
biosphere
geosphere
Dissolved carbonic acid and dissolved bicarbonate
Plants, animals, fungi, bacteria, and other living things
Carbon dioxide and methane gases in the air
Limestone, diamonds, graphite, coal, oil, sand, and silt
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