gas - the form we find Carbon Dioxide on Earth, sea level - where does air pressure feel most normal to humans on Earth?, fossils and dead plants - ways Carbon is stored in or on Earth, barometer - instrument used to measure atmospheric pressure, altimeter - measure of elevation above sea level, electric power, transportation industry - several sources of CO2 in the atmosphere, produce energy  - uses of fossil fuel, 78% nitrogen, 21% oxygen - major components of air, nitrogen - ingredient missing from Earth's atmosphere, nitrogen is useful - to make amino acids in our bodies, which turn into proteins,

Gr. 8, Science, Chapter 5

Leaderboard

Visual style

Options

Switch template

Continue editing: ?