Question

which sources would preserve the soft tissues of an early mammal? check all that apply
amber in russia
frozen soil in the arctic
shale in virginia
sandstone in the badlands
foraminifera in the ocean
ice sheets in greenland

Explanation:

Amber can preserve soft - tissues through entrapment. Cold environments like Arctic frozen soil and Greenland ice sheets slow decomposition, preserving soft tissues. Shale, sandstone, and foraminifera are less likely to preserve soft tissues of early mammals.

Answer:

A. amber in Russia, B. frozen soil in the Arctic, F. ice sheets in Greenland