What has been the dominant characteristic of earth's temperature over the past two million years, but before modern humans arose? a. repeated glaciations and interglacials b. snowball earth c. warmer than today's temperature d. about the same as today's temperature

Repeated glaciations and interglacials has been the dominant characteristic of Earth's temperature over the past two million years, but before modern humans arose.

Option A

Explanation:

Glaciation is a period of time that comes with in an ice age which is marked by colder temperatures and interglacials are the time period of climate which is warmer which is between the ''glacial periods''.

Repeated glaciations and interglaciations have affected the temperature of earth since the last two million years. The recent glacial period occurred around 1 million year ago and since then the earth has been in an interglacial period which is known as ''Holocene''.