It would be both 8 and -8.
I believe the correct answer would be the Romans
Answer:
Deep ocean exploration is all about investigating its geology i.e physical and chemical along with biological conditions on the ocean floor where sunlight cannot reach. There has been an interest in the deep ocean due to scientific communities and for industrial purpose. Exploration is carried by submarine and remotely operated vehicles at about 300m to 1000m. Analysis of ocean floor had found a huge concentration of mineral deposits such as manganese, copper, cobalt, gold, zinc etc.
The mining is carried out by using hydraulic pumping or bucket type excavator and are processed on ground industries. Deep-ocean mining has not been able to reach its full potential due to the high cost of operating and environmental damage.
Answer: The lapse rate can be defined as the rate at which the temperature changes when one moves upward from the earth's atmosphere.
Explanation:
The main difference between the positive lapse rate and negative lapse rate. The lapse rate is positive in case the one goes to the elevation and the temperature decreases. But the temperature increases with the elevation. This is called temperature inversion and if the temperature increases then it is the negative lapse rate.
Answer:
Subduction and Ocean Trenches.
Explanation:
These are the two words that fit.