Porosity is the fraction of material occupied by empty spaces. It can be expressed as a percent or a decimal.
Assume that the porosity of a sample of sand and a
sample of gravel is the same: 30 percent (0.30).
Determine the porosity of a mixture of the sand and
gravel, assuming that the sand fills the spaces between
the gravel.

The highest point on earth is the peak of mount everest if you climb to the top you would be approximately 29,035 feet above sea level at remembering that amount is 5280 feet percentage of the height of the mountain would you have to climb to reach a point 2 miles above sea level

Explanation:

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radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.