Its a science homework he has to submit tomorrow.
2007-09-22 22:25:58 · 3 answers · asked by Tolulase R 1 in Education & Reference ➔ Homework Help
Hi
Cover these topics
air is oxygen20% nitrogen and carbon dioxide
hygrometer: used to measure air temperature, humidty
anemometer: used to measure wind speed
barometer: used to measure air pressure
http://en.wikipedia.org/wiki/Barometer
how man uses air: aeroplanes, wind turbines,sailing, windmills
nature uses air for seed dispersion of flowers and trees
examples dandelion
Even helps mum dry the clothes
Search on http://en.wikipedia.org
Covering all these topics...teacher will be amazed... should give top marks...good luck!
2007-09-23 01:46:26 · answer #1 · answered by java 4 · 0⤊ 1⤋
Air is all around us
We breathe air
Without air we would all die because all living things need air
We, humans, breathe Oxygen
There all other gases like Carbon Dioxide
2007-09-22 23:17:58 · answer #2 · answered by ? 7 · 0⤊ 0⤋
check wikipedia (en.wikipedia.org)
or just use Google
2007-09-23 00:14:44 · answer #3 · answered by Anonymous · 0⤊ 1⤋