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musickatia [10]
3 years ago
9

Periodic table below,which elements are predominantly gases with low densities

Biology
1 answer:
Svetach [21]3 years ago
7 0
All of the noble gases which are helium neon argon krypton
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Which example of artificial selection is caused indirectly by human activity?
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The graph below represents the solar intensity measured over one day in northern Canada. What is the most likely date?
Dmitry [639]
It is important to note that the graph has 0 solar intensity for a long part of the day; around 16 hours. Only from 8 to 16 hours do we have significant sunlight.
This means that the length of day is very short during this time of the year;

The length of the day changes throughout they year; day is equal to night (12 hours each) during the solstices on March 21 and September 23 but during summer day is longer than night in the northern hemisphere; during winter it is smaller. THe smallest daylength is at December 21st (in the northern Hemisphere). This phenomenon is due to the tilt of the axis of the earth.

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