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I learned that natural gas has no smell. We can smell it because it is given a smell on purpose for safety reasons so you can smell a gas leak.

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I HAVE LEARNED THAT ANASTETIC GAS IS USED IN HOSPITALS

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I learned that there

is such thing as a

periodic table

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Finlay learned that Natural Gas was formed

deep under Earth about 100 million years ago.

Jack learned that plants need carbon dioxide to survive

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I learned that

oxygen came

from trees

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I have learned that anastetic gas is used in hospitals

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Helium is one of the so-called

noble gases

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I learned that helium is lighter than air and it is tasteless, colourless and oderless.

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I learned that anaesthetic gas is used in hospitals

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GAS CAN BE ALL KINDS OF STUFF

AND ALSO EVRYWHERE

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i have learned that oxygen makes up 20% of the earths atmosphere oxygen

common chemical element found on or in earth

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I learned thatnatural gas has been formed 1 million years ago

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we learned that helium is so light that worlds gravity can not hold on I t

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I learned that Carbon

Dioxide makes up

about 3/100 of the air.

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I learned that 78% of the air that we breath

is made up of nitrogen.