One of the reasons we can't get an accurate count is that the bulk of the things that have yet to be discovered and described are in the realm of the very small: insects, bacteria and other microbes.
Following are the techniques or methods or approaches we can say that were used by the scientists to determine the geologic age:
1. Relative age dating
2. Absolute age dating.
3. Radiation measurement.
4. Stratigraphic superposition.
5. The fossil record.
The scientists used the method of relative dating to divide Earth's past in different chunks of time when alike organisms were on Earth. After that, to discover the actual number of years ago that events occurred, the scientists used the method of absolute dating.
The team has lost 5 yards from where they started and then they gained 9
-5+9=
4 yards
Answer:
this is a water fall I believe
Answer: Porphyry
Explanation:
This is an igneous rock that has a fine grained texture!
Hope this helps! :)