Answer:
5.02×10^18kg
Explanation:
Pressure = mass/area
Mass = pressure × area
Pressure = 14 pounds per square inch, radius = 6370km = 6370000m = 6370000/0.0254 = 2.51×10^8inch
Area = 4πr^2 = 4×3.142×(2.51×10^8 inch)^2 = 7.90×10^17 square inch
Mass = 14 pounds per square inch × 7.90×10^17 square inch = 1.106×10^19 pounds = 1.106×10^19 × 0.45359kg = 5.02×10^18kg
C is the correct answer.
Barrow Alaska is an example of a polar tundra climate that is marked by low vegetation growth, cold temperatures, low amounts of precipitation, and no true summer.
Answer:
Earth orbits around sun in anticlockwise direction and spins in its axis in east to west direction.
Explanation:
- Earth revolves around the sun in an anti-clockwise direct direction that is from east to west. The places in the east are head of the west due to the sun rises in the east and sets in the west and this time is measured from the Greenwich meridian
- IST and GMT are the important standard time zones that are synchronized with the clocks of the geographic region to a single standard time.
- A locally chosen meridian is established as a standard time. Such as Indian standard time and Greenwich meridian time followed in great Britain.
<span>Although China's agricultural output is the largest in the world, only about 15% of its total land area can be cultivated. China's arable land, which represents 10% of the total arable land in the world, supports over 20% of the world's population. </span>