C is the answer both a and b
Many fossils remain buried
Rocks contain the history of life...
Btw the animal ones don't count i think cuz fossils can be anything like teeth, bones or anything not just animals it can be formed by leaves as well so just for extra guidance i believe the ones that state animals are probably not the options to choose due to the fact that fossils are not just living organisms they're anything that has been buried and decomposed over many years and layers of sediments cover it over many years compression may alter the shape of the fossil aswell!
Hope that extra info helps for a bit of guidance!
Answer:
c. fewer than 6 people per square kilometer
Explanation:
The overall population density of the Amazon Basin IS fewer than 6 people per square kilometer.
Some reasons are business travel, family matters, reunions, parties :)
