The group there in is Tertiary Consumer.☺
Answer:
a
Explanation:
this image shows what each letter changes to.
Answer:
its a alteration i would go with B
Explanation:
Is this a multiple choice question or...??
If not, I'd say, that its simple as scientists can easily decipher which variable caused the situations result. And thats because you may have one manipulated variable to be able to know the responding variable.