Explanation:
Earth is known as the "Blue Planet" because 71 percent of the Earth's surface is covered with water. Water also exists below land surface and as water vapor in the air. Water is a finite source. The bottled water that is consumed today might possibly be the same water that once trickled down the back of a wooly mammoth. The Earth is a closed system, meaning that very little matter, including water, ever leaves or enters the atmosphere; the water that was here billions of years ago is still here now. But, the Earth cleans and replenishes the water supply through the hydrologic cycle.
 
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Answer:
Both apply to a certain region
Choice C is correct
Explanation:
Weather refers to the atmospheric conditions of a given place over a short period of time, like a day.
On the other hand, Climate refers to the average climatic conditions of a particular region measured over a long period of time.
Both weather and climate apply to a certain region.
 
        
             
        
        
        
Answer:
V2 = 9.58 Litres. 
Explanation:
Given the following data;
Initial volume = 25 L
Initial pressure = 115 kPa 
Final pressure = 300 kPa 
To find the new volume V2, we would use Boyles' law. 
Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas. 
Mathematically, Boyles law is given by;
 
 
 
 
Substituting into the equation, we have;




V2 = 9.58 L
Therefore, the new volume is 9.58 litres. 
 
        
             
        
        
        
Answer is: D. 6.02 x 1023. 
Because this is Avogadro constant<span> (the number of </span>constituent particles, in this example atoms of gold<span> that are contained in the </span>amount of substance<span> given by one </span>mole). <span>The </span>mole<span> is the </span>unit of measurement<span> for </span>amount of substance, t<span>he mole is an </span>SI base unit<span>, with the unit symbol </span>mol<span>.</span>
        
                    
             
        
        
        
Answer:
The amount of energy required to remove an electron from an isolated gaseous atom in its gaseous state.
Explanation:
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