Answer: 2
Explanation: Greenhouse gases are very important in keeping our planet just right. If we have too many Greenhouse gases it would be too hot, but we can't eliminate all of them or it will be too cold
False, that only applies to water as far as I know, but I know for a fact that gold does not melt at 0 degrees Celsius
A metallic bond is a force that holds atoms together in a metallic substance.