C.the puppy would gain both mass and weight
The chemicals would mix within the atmosphere and combine with water forming acid rain, your answer is D
<h2>The answer is:</h2>
Why does a duck eat?
<h2>Explanation:</h2>
If we take a look at the scientific method, the first step is observation. We need to observe things and then we move towards the formation of a hypothesis. So by looking a duck while the duck is eating, the first question that must come to our minds should be " Why does a duck eat?" And hence we can say that this is the best scientific question as it leads us towards the rest of scientific research.
Answer:
The building blocks of proteins are amino acids, which contain elements such as H,N,O,C , and more. They are the monomers of the proteins. So, the monomer will be the amino acids, and the polymer will be the proteins themselves
Explanation: