Answer:
It ranges from 2 to 13 km/s depends upon composition.
Explanation:
The velocity of seismic waves are different throughout the earth because of different composition of the layers inside the earth. Velocity of seismic waves increases with depth and it is approximately 2 to 8 km/s in the Earth's crust whereas, 13 km/s in the deep mantle so it means the velocity of seismic waves is higher in the mantle as compared to earth's crust due to different composition of layers between the mantle and earth crust.
Answer:
Kelp recruits most successfully in regions of upwelling (regions where the ocean layers overturn, bringing cool, nutrient-rich bottom waters to the surface) and regions with continuously cold, high-nutrient waters.
Explanation:
Paper Wasps, hornets and yellowjackets.
The countries of the Arabian peninsula solve the problem of obtaining the scarcest resource by building industrial plants to remove the salt from seawater to use it for irrigation and drinking.
Answer: Option A
<u>Explanation:</u>
- Water is the scarcest resource of the Arabian peninsula as being the desert land form.
- The availability of potable water is scarce and has access to saline water which cannot be drunk or used for irrigation.
- Therefore, industrially treated saline water removes salt from the sea water and then can be used for drinking and irrigation purpose.
