Answer:
1. Interstellar cloud is an accumulation of dust and gas in between stars .
2 . The outer planets are composed of low density gas .
3 . Meteorites is the most important source for determining the age of our Solar System .
Explanation:
1 . Interstellar cloud
It is formed by the accumulation of plasma , gas and dust in the galaxy .
An interstellar clouds are more sense than the interstellar medium .
The cloud are classified according the size , density and temperature of the cloud . The interstellar cloud is formed by dust and gas particles from a red giant .
2 . The composition of the outer planets are from , the low density gases.
3 . Meteorites -
A meteorites originates from the outer space , and is a solid piece of debris . it can pass through the surface of a moon or planet , and due to high pressure and chemical interactions , can make the meteorite burn , and hence is seen as a shooting star or falling star.
<h2>Answer:</h2>
<u>Ozone is produced by the </u><u>reaction of solar radiation with atmospheric oxygen</u>
<h2>Explanation:</h2>
Ozone is a special form of Oxygen which is present in the atmosphere and it protects us from dangerous ultraviolet radiations which comes from the sun. The chemical formula of ozone is O3. This gas is produced naturally in the stratosphere when some highly energetic solar radiation come from the sun and strikes molecules of oxygen present in the atmosphere and cause the two oxygen atoms to split apart in a process called photolysis.
Answer: Renewable
Explanation:
Hydropower is a renewable resource. The water that is used to power the turbines can be used over and over again
<span>The major renewable resource produced in western central Europe is hydropower</span>
