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VLD [36.1K]
3 years ago
14

What does the hummingbird do to survive the freezing cold nights in the Atacama Desert?

Geography
2 answers:
tester [92]3 years ago
4 0

Answer:

To meet this energetic challenge, hummingbirds save enough energy to survive cold nights by lowering their internal thermostat at night, becoming hypothermic.

Explanation:

anyanavicka [17]3 years ago
3 0

Answer:

The Hummingbird uses a process known as torpor, where it lowers it's tempeture below the point of death (18°C/65°F) and slows it's metabolic rate.

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a ship is 50 miles west and 31 miles south of a harbor what bearing should the captain use to sail directly into the harbor?
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31.8 degrees north of east (not sure what format the question wants)

To get this answer you draw a triangle with the line between the ship and the harbor, a line going horizontally, from the ship and ending below the harbor, and a line going vertically down from the harbor to the end of the horizontal line. The horizontal line has a length of 50 and the vertical line has a length of 31. Using inverse tangent, you can find the angle between the ship and the harbor, which is

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arctan(31/50) (or tan^-1(31/50))
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