Which sources would preserve the soft tissues of an early mammal? Check all that apply.amber in Russiafrozen soil in the Arcticshale in Virginiasandstone in the Badlandsforaminifera in the oceanice sheets in Greenland

Soft tissues can be preserved when an organism is trapped in amber or kept frozen, which slows decay. Amber in Russia, frozen soil in the Arctic, and ice sheets in Greenland could therefore preserve an early mammal’s soft tissues. Shale and sandstone usually preserve fossilized hard parts, while foraminifera are tiny marine organisms, not a soft-tissue-preserving source here.

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