Grain farming is done for economic activity and this makes it commercial. It is highly specialized and mechanised. The yield per acre is low so the farms are big. The yield is high per man so little manpower is needed for production. Grain farming is subject to market conditions like climate.
Answer:
B, C, and D
Explanation:
As the question says, a GPS finds exact locations. Exact locations have nothin to do with when something happened.
Answer:
Infrequent but highly explosive
Explanation:
At a subduction zone, the descending plate carries with it sediments containing water and carbon dioxide.
These substances are trapped as fluids at high pressure in the rising magma.
When they reach atmospheric pressure at the surface, they become gases that expand suddenly and explosively.
Hydrogen peroxide will decompose into water and oxygen gas
The correct answer is - increased wealth.
Public safety, national defense and public services are all a must for every country's government so that the country can function normally. Increased wealth is not a must, even though every country's government would be more than happy to have it.
