I think it is A.burning of fossil fuels
Answer:
The total mass of water in on Earth's surface is
.
Explanation:
Total planetary surface area = T = ![510,066,000 km^2](https://tex.z-dn.net/?f=510%2C066%2C000%20km%5E2)
Total land area of planet = L = ![148,647,000 km^2](https://tex.z-dn.net/?f=148%2C647%2C000%20km%5E2)
Total water area of planet = W
T = L + W
![510,066,000 km^2=148,647,000 km^2-W](https://tex.z-dn.net/?f=510%2C066%2C000%20km%5E2%3D148%2C647%2C000%20km%5E2-W)
![W=510,066,000 km^2-148,647,000 km^2=361,419,000 km^2](https://tex.z-dn.net/?f=W%3D510%2C066%2C000%20km%5E2-148%2C647%2C000%20km%5E2%3D361%2C419%2C000%20km%5E2)
Volume = Area × Depth
Volume of water on earth = V
V= ![361,419,000 km^2\times 100 km^=36,141,900,000 km^3](https://tex.z-dn.net/?f=361%2C419%2C000%20km%5E2%5Ctimes%20100%20km%5E%3D36%2C141%2C900%2C000%20km%5E3)
![km^3=10^{12} L](https://tex.z-dn.net/?f=km%5E3%3D10%5E%7B12%7D%20L)
![V=36,141,900,000 km^3=36,141,900,000 \times 10^{12} L](https://tex.z-dn.net/?f=V%3D36%2C141%2C900%2C000%20km%5E3%3D36%2C141%2C900%2C000%20%5Ctimes%2010%5E%7B12%7D%20L)
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
![D=\frac{M}{V}](https://tex.z-dn.net/?f=D%3D%5Cfrac%7BM%7D%7BV%7D)
![M=D\times V](https://tex.z-dn.net/?f=M%3DD%5Ctimes%20V)
![M =1 kg/L\times 36,141,900,000 \times 10^{12} L=3.61419\times 10^{22} kg](https://tex.z-dn.net/?f=M%20%3D1%20kg%2FL%5Ctimes%2036%2C141%2C900%2C000%20%5Ctimes%2010%5E%7B12%7D%20L%3D3.61419%5Ctimes%2010%5E%7B22%7D%20kg)
The total mass of water in on Earth's surface is
.
Answer: Bassically, certain gasses like CO2 (Carbon Dioxide) that come from stuff like burning fossil fuels and global warming, they heat up the earth, are wastes and are used as fuel.
Western Europe has advanced communications and transportation systems. A city in Western Europe is London.