B. The region experienced a surplus of food
The magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts. The Earth's magnetic field deflects most of the solar wind, whose charged particles would strip away the ozone layer which protects the Earth from ultraviolet radiation.
Answer: 75
This is how I did it: We know that triangles add up to 180, so subtract the known angle from 180 and you'll get 150. Then divide 150 by 2 to find out the other two angles and you'll get 75.
180-30=150
150÷2=75
So the answer is 75
:)
Hydrosphere is the answer because the islands and continents belong to water and hydro means water so this means water sphere