If instead of specialized doctors (neurologists, cardiologists, gastroenterologists, etc.) we had doctors who each knew the same things about all aspects of medicine it would be:

The correct answer would be "it would be the worse situation as the total medical knowledge would decrease in a society".

If all the doctors would have the same level of knowledge about all aspects of medicine then it might be possible that none would be able to treat a particular disease as all would have limited knowledge about that disease.

In contrast, specialized doctors or surgeons have maximum knowledge about a particular organ which helps us in treating the disease efficiently.  

For example, the cardiologist would have much more knowledge about the heart as compared to the general physician.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds