Answer:
Index fossil, any animal or plant preserved in the rock record of the Earth that is characteristic of a particular span of geologic time or environment. A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time.
Step-by-step explanation:
The answer would be 4 divided by 2/3 = 6 tiles
Answer:
answer is 64x68
Step-by-step explanation:
180 degrees= a whole line
180-102=78
So m13 should equal 78°
