Explanation:
Percentage composition of oxygen = (80/134) * 100% = 59.7%.
Answer is in the photo. I can only upload it to a file hosting service. link below!
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Answer:
I think A it looks to be the answer
Explanation:
sorry if wrong
1 - causes the molecules of the object or surface it strikes to vibrate faster, increasing its temperature.
2-carbon dioxide, methane, nitrous oxide, and water vapor it has to be one of these 3
3-The greenhouse effect is the way in which heat is trapped close to Earth's surface by “greenhouse gases.”
4- because of the fossil fuels that people are burning for energy.
5- due to human activities
Nickel is a pure substance
Rust is also a pure substance