Read the following sentence from the section "The Satellites Layer."
But in the thermosphere, the
temperature can reach up to 4,500
degrees Fahrenheit.
What does the author mean by "up to 4,500
degrees"?
A
It cannot be any cooler than 4,500 degrees.
B
It has to always be at least 4,500 degrees or
hotter
С
It can get as hot as 4,500 degrees, but not
any hotter.
D
It is 4,500 degrees most of the time.

The particles that cause the aurora are energized in the magnetosphere, that is, above the atmosphere. If they don't reach 10,000 volts, they will still cause auroral light. The lower energy won't change the wave length of the light, but will cause the light to be dimmer.

Explanation:

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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