all of the above are different kinds of enzymes
Independent Variables can be manipulated, and a Dependent Variable are observed and measured. Another way to say it is that the Independent variables change to get different results while the Dependent variables never change because you are trying to see what causes it to change
Next organ would be "Small Intestine"
So, option C is your answer.
Hope this helps!
Two components joined together by a glycerol molecule(I think).
D. Artificial selection means that it doesn’t happen naturally, many dogs breeds exist because of artificial selection