Index fossils are used to determine the of the rock. a. age c. color b. makeup d. none of the above Please select the best answer from the choices provided

Option-A

Explanation:

Index fossils are the fossils that are used to determine and identify the geological time period. The index fossils are thus also known as the guide fossils or type fossils or indicator fossils.

The index fossils are found in the wide geographical distribution in the rocks evolutionary trends. The index fossils are usually found in the ocean and rarely in the terrestrial landforms.

Thus, Option-A is correct.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.

paper covers rock.

explanation:

rock only smashes scissors.