Which type of fossils form from hardening sediment? casts
tarpit fossils
carbon films
amber fossils

Casts.

Explanation:

Tarpit fossils form from something falling into a pit of tar and not decomposing.

Amber fossils form from something, usually insects getting stuck inside sap and it hardening.

casts form when something dies, gets pressed down into the dirt, then rots away leaving an mold. Then minerals or Harden sediment fill in the mold creating a cast.

carbon films form when something dies, gets buried under dirt, and rots away leaving an outline of it.

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.

the answer

b.) bowling ball