What conditions might cause the most water and sediment to be collected at the bottom of the stream table?

In general, did the simulated mice align with your predictions from the punnett squares? yes or no?

Are the layers of rock above and below the coal older or younger?

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.