Answer:
Option C. Is used to cool the drill bit and to flush rock cuttings up and out of the drill hole
Explanation:
Drill mud plays a vital role in the drilling process. Its addition into the well-bore does a lot in enhancing the drilling processes and activities.
Among other importance and function of the drill mud /fluid:
1. It is used to cool off the drill bit
2. It flushes rock cuttings out of the drill hole
3. High pressure control
4. Providing buoyancy
5. Lubrication
Answer:
Some of the key characteristics of CBDs include: High concentration of offices, banks, financial institutions, and so on. High density and high-rise buildings. High land values.
In which of the following can animals not be preserved as fossils?
A. Ice
<u>B. Water
</u>
C. Amber
D. Tar