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 .
Answer:
Urban: located in a city; a densely populated area
Rural: located in a country; a sparsely populated area
urbanism: an emphasis on life, work...
Metropolitan area: a territory that spreads outward...
Answer:
See below
Explanation:
From Nasa:
"Understanding the planets and small bodies that inhabit our solar system help scientists answer questions about its formation, how it reached its current diverse state, how life evolved on Earth and possibly elsewhere in the solar system, and what characteristics of the solar system lead to the origins of life."
Cultural hearths<span> are civilizations that have </span>cultural influence around the world. There are seven original culture hearths<span> that include West Africa, Meso america, the Nile River Valley, the Indus River Valley, the Wei-Huang Valley, the Ganges River Valley and Mesopotamia</span>
Answer:
b) Coal
Explanation:
The rock from the presented list that is composed of non-mineral matter is the coal. This rock is actually composed of organic matter.
The coal is a sedimentary rock. Its basis is organic matter as mentioned. The organic matter has been provided by the trees that have died off, especially the ones from the Permian period.
When the trees died off, they were covered by natural materials that isolated them from the outside influences that would decompose them. Instead, they have been gradually buried deeper into the ground, being exposed to higher temperatures and pressure, which gradually, over the course of millions of years turned the organic matter and the chemicals with which it interacted into sedimentary rock, the coal.
The coal has been the main energy source for the industry, and it was extremely important for the technological advancement in the past few centuries.
