Question

The diagram shows two different types of fossils from the same kind of ancient organism. Which labels complete the diagram? X: mold Y: cast X: cast Y: mold X: trace Y: imprint X: imprint Y: trace

Answer 1

Answer:

X: Mold

Y: Cast

Explanation:

A mold is created when the interior is filled by sediment or covers the outside of a dead organism, and the remains of the organism do not survive, leaving only the rock's shape and texture to suggest the organic material that was there.

A cast is created when an animal, plant, or other organism dies, its flesh deteriorates and its bones deteriorate due to chemical reactions; minerals enter the cavity progressively, resulting in a cast that is in the original organism's general form.

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Answer 2

Answer:

A

Explanation:

X: Mold

Y: Cast