Answer: The Earth is a closed system for matter
That is a list of all basic elemental materials on our planet. Because of gravity, matter (comprising all solids, liquids and gases) does not leave the system.
For the bottom section I think it goes C B A
Answer:
The Earth is round. There is evidence that can prove that.
Explanation:
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one can say is Language for one.
80% of Swiss speak German, 20% speak French.
Austrians speak only German.
