Which statement about the mound builders is false?
1. some of the mound builders' mounds may have been religious symbols.
2. the mound builders lived in cities.
3. some of the mound builders' mounds were graves.
4. the mound builders' flourished over 6,000 years ago.

it is c some of the mound builders mounds were graves.

Explanation:

the answer is 3. Some of the mound builders' mounds were graves.

Explanation:

I just took the test in k12

they have different colored collars

1.the population change is near or at replacement level.

4. the birth and death rates are balanced.

6. sweden is most likely a developed country.