It refers to making or crating new genes in form of mutation
in duplicates of old genes. It is also a mechanism in major way through new
genetic material is generated during evolution. The duplication happens in
event termed unequal crossing over or recombination between misaligned
homologous chromosomes during meiosis.
I belive they are to grow, repair, and reproduce.
UV rays reacting with the O2 molecules
I might be wrong a little but
Hope the helps :)
"(1) Human population growth reached 6.8 billion in 2010 and it continues to increase" is what led to the other <span>three, since all of these happen from human activity. </span>
U got this so open your book/notes and look for the answer stop being lazy
