Answer:
Economics is important because it helps people understand how a variety of factors work with and against each other to control how resources such as labor and capital get used, and how inflation, supply, demand, interest rates and other factors determine how much you pay for goods and services.
Explanation:
PLZ MARK BRAINLIEST
Answer:
5 centimeters
Explanation:
The seafloor is spreading at rates of around 5 cm usually, though it can go up to 16 cm per year but rarely. The seafloor spreading is caused by the geological activity at the places where there's divergent plate boundaries. As the plates move away from one another they leave thin and fragile crust behind which is easy to break through for the magma. As the magma gets through and reaches the water, it starts to cool off very quickly, constantly pulling up and creating new crust, pushing the old crust sideways and further away from the divergent boundary.
The two example of Supersonic aircraft are Concorde
developed by UK and France which travelled from NY and London exceeding Mach
(the speed of sound). It was retired following a bad accident. The most famous
supersonic plane is the SR-71 Blackbird spy plane developed by Lockheed. A
supersonic airplane is simply one that is capable of flying faster than the
speed of sound, which is about 760 miles per hour.
They learned how to grow food and survive from American Indians.