Answer:
The total mass of water in on Earth's surface is 
.
Explanation:
Total planetary surface area = T = 
Total land area of planet = L = 
Total water area of planet = W
T = L + W
Volume = Area × Depth
Volume of water on earth = V
V= 
Total mass of total water on the earth = M
Density of the water,D = 1 g/mL = 0.001 kg/0.001 L=1 kg/L
1 g - 0.001 kg
1 mL = 0.001 L
The total mass of water in on Earth's surface is .
4.) Movement along these plates can cause powerful earthquakes
Green house gasses release during the combustion of fossil fuels - true
Fossil fuels are: coal and petroleum. When they are combusted they produce around 21.3 billion tonnes of carbon dioxide (CO2) per year, but it is estimated that natural processes can only absorb about half of that amount, CO2 causes radiative forcing and thanks to CO2 the average surface temperature of the Earth rises. This phenomena of temperaturę rising causes hurricanes, tornadoes and tsunami and, of course, the level of the sees and oceans is also rising because glaciers are melting.
The amount of heat they are exposed to has a lot to do with the inferences and observations that they make on the density of the earth's core. The inner core is the most compact due to the fact that they have a lot of direct exposure to heat and the gravity of the earth pressung down on it. The inner core is less subjected to those conditions.
