How Fast can you answer CORRECT how fast can i give you brainliest??? TWO answers explain your answer if its correct ill do a 100point question just for you:D.. //

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

the question isn't complete here so i can't right an answer '_'

. ph changes the ability of them he enzyme to dissolve in water.

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )