atmosphere and climate Flashcards
1
Q
what is the atmosphere made up of
A
21% oxygen, 0.04% carbon dioxide and bit of gases (water vapour and noble gases) 78% nitrogen
2
Q
two human activities that increase carbon dioxide
A
burning fossil fuels to power cars and make electricity
deforestation less trees=less co2
3
Q
what is global warming
A
general increase in temperature on earth
4
Q
effects from global warming on environment
A
glaciers melt-rise of sea-flooding
rainfall patterns change-hard to grow crops
5
Q
where does the energy from the sun get trapped
A
greenhouse gases
