Answer:
All of the above
Explanation:
Proteins contain a long chain of amino acids which are a chain of oxygen, nitrogen, carbon, hydrogen or sulfur.
HOPE THIS HELPED
Answer: I believe it is B
Explanation:
because it states that a chemical compound always contains exactly the same proportion of elements by mass
The answer is D: studying how the mayfly population affects the number of trout in a stream <span> As the science of ecology studies interactions between individual organisms and their environments.</span>
12 moles, there is 3 moles of copper in one mole of Cu3 (PO4)2, there four multiple 3 by 4 and you get 12
