answer the questions about the diagram. organism appears in the least outcrops. organisms are the oldest…

answer the questions about the diagram. organism appears in the least outcrops. organisms are the oldest. organism would make the best index fossil.

answer the questions about the diagram. organism appears in the least outcrops. organisms are the oldest. organism would make the best index fossil.

Answer

Brief Explanations:

  1. To find the organism in the least outcrops, count the number of outcrops each organism appears in.
  2. The oldest organisms are in the lowest - most layers as per the principle of superposition.
  3. The best index fossil is one that appears in multiple outcrops and has a short geological range.

Answer:

  1. Organism D appears in the least outcrops.
  2. Organisms in the bottom - most layers (e.g., the shell - like organism in the bottom of Outcrop 1) are the oldest.
  3. Organism A would make the best index fossil as it appears in multiple outcrops.