Answer:
It's the 4th, as third is modified by the man.
Explanation:
- The Third atmosphere was a rearrangement of the plate tectonics and the evolution of atmosphere by the transferring of it to the oceanic basins. As the amount of oxygen in the atmosphere used to be more than 30% around 280 million years ago than the present.
- Rapid development of land plants and animals was caused due to this atmosphere and hence this atmosphere is now less than 21% and due to his influence or modification of man with his technological tools and techniques.
- The atmosphere is rapidly shrinking due to the greenhouse effect and global warming that is leading to the fifth atmosphere that may be like that of mars as devoid of gases and barren and dry with oceans running under the crust.
Answer:
In Colorado, Alamosa, North America.
Explanation:
The Great Sand Dunes, in southern Colorado, are the tallest in North America, with a few dunes towering over 700 feet. it features 30 square miles of rolling sand dunes along with incredible high-elevation mountains.
The dune takes two hours to climb.On March 17, 1932, the Great Sand Dunes were designated as a National Monument. It was until the 2000, that was when the Great Sand Dunes were considered a national park and preserve.
Earthquakes, as the tectonic plates move pressure can build up and result in earthquakes.
B shows the victoria lake.
Answer:
The Great Basin
Explanation:
The desert area in the center of the Cordillera in the United States is called the Great Basin.
- The Great Basin is located between the Rocky mountains and the Coastal plains.
- This region is bowl shaped depression between the topographic features.
- The mountains prevents precipitation from forming in this excluded region.
