Question

which feature do amber fossils have that mold fossils do not? preserved soft tissue organisms turned into rock solid copies of the original organism impressions of hard tissue left by organisms

Explanation:

Amber fossils preserve soft tissue. Mold fossils are just impressions and do not preserve soft tissue. Organisms turned into rock is petrified fossils. Solid copies of original organism is cast fossils. Impressions of hard tissue left by organisms is mold fossils.

Answer:

preserved soft tissue