Trace fossils; cast means ______?

فوسلز کا سراغ لگانا؛ کاسٹ کا مطلب کیا ہے؟

Inside filling of hollow cavity

Soft part of fossils

Foot prints

None of these

A cast is formed when the hollow cavity of a mold is filled with minerals or sediment.

It creates a positive replica of the organism's shape.