Which is the best example of a compressionforce? Throwing a football - squeezing a stress ball - playing tug of war with friends - making a ballon animal. I think the subject is chemistry it’s science tho

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.

Combustion is the act or process of burning. therefore, i believe the answer is  a: burning wood. 

Theyre semiconductors.