The North Star has very little apparent rotation in the night sky because: it lies directly above the Earth's axis of spin. The background stars during a solar eclipse are those of constellations: of the opposite season.
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Answer:
Clay
Explanation:
Radon -
Radon is one of the radioactive noble gas , It is highly radioactive , hence , is dangerous for health . Radon is formed by the radioactive decay of the uranium into Lead .
The half life is equal to 3.8 days .
Radon is is very dense in nature .
Since , radon is a noble gas so , it does not react with the surroundings .
In the clay , the radon gets lost immediately from the source rock through the fractures .
This is Israel!
Israel produces a lot of food, very effectively, and also imports a great portion of it, and that despite having quite unfavorable conditions for agriculture.
They accomplish this through careful planning and through effective irrigation.
