Erosion needs Earths rock
Erosion is wearing down and carrying away rocks by wind and moving water, happens faster with steep hillsides and heavy rain
Answer:
Difference is given as under
Explanation:
- Mountain belts or mountain ranges are a line of hills connected by high ground. Usually an orogeny most of them are a result of plate tectonic effects and maybe young may be old depending upon their characteristic composition. Like the Himalayas is a young fold mountain formed in the tertiary system of rocks.
- Usually, the mountain is separated from highlands, valleys, and passes. Usually, they tend to regulate the climate affecting snow and rainfall patterns. As compared to the stable interiors upon concerning their age are mostly young as they are continuously on the move and their formation is impacted by erosion and continuous wear and tear of geomaterials.
- Concerning the height, the continents are lower as compared to the high elevated landmasses. Though the continents have large landmass and landscape is composed of various elements as mountain belts are smaller as composed to chains connecting the continents at the edges and borders.
- Only continental mountain belts like the arctic and antarctic circle have a large scale of mountain chains and ranges on earth that are since millions and billions of years ago the formation of super landmasses.
Earth has the most density with 5.51 grams / cm^3
A net population decline resulting from an "excess of deaths over births".
Option: A
<u>Explanation</u>:
Demographic transition is a shift from higher to lower level of fertility and mortality.Rapid development in industrialization and urbanization in 
century resulted into enormous population growth. But decline in early 
century covered many reasons like consequences of two calamitous wars, where Europe suffered large population declination due to battle death and civilian causalities in World War I and II. Hence the acceleration of population growth in 19th century but downfall in 20th is also considered as balance.
