What happens when: Magnesium burns in oxygen ​

Which factors threaten the forests of north america?

This is chinese will mark brainliest what does hǎo bù hǎo mean? it is used to ask a question, good/not good? it is used when you are indecisive about something. it is used to say that something is both good and not good at the same time. it is incorrect and means nothing.

Hoinar dupa emil garleanu povestire in scris dau coronita