Loss of habitat from any number of causes is the main reason for species endangerment currently.
They must occur in the DNA, which is in each cells nucleus. More specifically the nucleolus of the cell. A mutation occurs in an allele, where a base triplet (or a codon) gets transcribed incorrectly.
almost any living organisms like animals and humans. Im not so sure about plants though. happy studying! :)
The dice would be able to float bc of mass
