Answer:
Explanation:
The length of LM is twice as the length of QR and the length of MN is twice as the length of RS. By Pythagorean theorem, the length of LN is twice as the length of QS. Then, .
Answer:
alluvial fan
Explanation:
Alluvial fans are a mix of sediments made up of mostly sand and gravel that are created when canyons, hills or mountains interact with flowing water. They help with the sustenance of life and irrigation farming as the main source of water.
Answer:
23.5º
Explanation:
The Earth has a tilt of 23.5 degrees on its axis. This tilt causes the seasons because certain parts of the Earth are naturally tilted towards the Sun more depending on the Earth's location in its revolution around the Sun. The Tropics of Cancer and Capricorn are located at 23.5º North and South of the equator respectively, and this number comes from the tilt.
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Answer:
Glaciers act as reservoirs of water that persist through summer. Continual melt from glaciers contributes water to the ecosystem throughout dry months, creating perennial stream habitat and a water source for plants and animals. The cold runoff from glaciers also affects downstream water temperatures. Many aquatic species in mountainous environments require cold water temperatures to survive. Some aquatic insects--fundamental components of the food web--are especially sensitive to stream temperature and cannot survive without the cooling effects of glacial melt water. Such changes in stream habitat may also adversely impact native trout and other keystone salmon species.
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