Well either way, it would be difficult for them to find mates, but if 50% of males were gone, the females would be able to reproduce with the men they have but if the females were killed off, it would affect birth rates even worse because the women carry the offspring. All of this also includes the offspring's gender
Archean and Proterozonic which are both broken into early middle and late periods
An example are our arms are similar to other s
Generally the soil in tropical areas is acidic so they would have to be adapted to the soil
