Pollution and Atmosphere cCGSE

What percentage of the air is Oxygen on Earth at the moment? Don't include the percentage sign

What percentage of the air is Nitrogen on Earth at the moment? Don't include the percentage sign

What percentage of the air is Carbon Dioxide on Earth at the moment?

• less than 1%

• 1%

• 21%

• 78%

• between 1-10%

What percentage of the air is Sulfur Dioxide on Earth at the moment?

• less than 1%

• 1%

• 21%

• 78%

• between 1-10%

What percentage of the air is Methane on Earth at the moment?

• less than 1%

• 1%

• 21%

• 78%

• between 1-10%

What percentage of the air is water vapour on Earth at the moment?

• less than 1%

• 1%

• 21%

• 78%

• between 1-10%

Earths atmosphere 4.5 billion years ago mainly came from the gases ...

• released by volcanos

• released by the sun

• released by the sea

• released by the moon

• released by organisms

Which gases were in greater quantities in the atmosphere 4.5 billion years ago ?

• more carbon dioxide

• more water vapor

• more nitrogen

• more oxygen

How did Earths atmosphere change over 5 billion years

• carbon dioxide went down

• water vapor went down

• nitrogen went down

• oxygen went down

Which gases are responsible for trapping heat on the planet ?

• sufur dioxide

• carbon dioxide

• methane

• water vapour

• nitrogen oxides