Question

how do organisms form carbon films? organisms turn into rock. residue is left on rocks when organisms decay. hollow forms are left in sediment by decaying organisms. organisms leave evidence of their activities, such as footprints.

Explanation:

When organisms decay, the carbon - rich parts of their bodies can leave behind carbon films. This occurs as the organic material breaks down and the carbon is preserved in a thin film on rocks or sediment.

Answer:

Residue is left on rocks when organisms decay.