Answer A - The mutation must effect non-reproduction cells only

B - The mutation must be fatal

C - The mutation must be heritable and able to be passed on to offspring

D - The mutation must produce a clear benefit to the organism, increasing its survival rate

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying

i got something better   a catchphrase here it is

ahem  

ahem

what the squwock

explanation:

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.