Mark each statement if it correctly identifies a condition that must exist for a culture to be considered a civilization.
a. people have developed a systematic approach to religion.
b. people have learned to farm and grow a surplus of food.
c. people divide up necessary labor.
d. people have begun to build cities.
e. people are ruled by a monarchy or oligarchy.

B) People have learned to farm and grow a surplus of food and c) People divide up necessary labor are both statements which currently identifies a condition that must exist for a culture to be considered a civilization. Many civilizations had no religion, did not live in areas which would be qualified as cities and were ruled in other sort of "governmental" forms that monarchies or oligarchies, so this is why they do not qualify as civilizations.

The correct answer is: it shows that ancient humans hunted the now exinct creatures.

Answer: - the gas is compressed