1.CO2 - carbon dioxide
<span>2.H2O - water </span>
<span>3.NaCl - salt </span>
<span>4.H2 - hydrogen</span>
The answer you're looking for is 8
Potential energy would increase because you are compressing the spring
<h2>Nitrogen fixation </h2>
Explanation:
It is the process of converting free nitrogen into nitrogenous compounds .
Let us study about it :
In nature there are certain plants called as leguminous plants .These plants have nitrogen fixing bacteria called as rhizobium in their root nodules .
This bacteria can convert free atmospheric nitrogen into ammonia .
Then this ammonia with the help of bacteria nitrosomonas and nitrobacter gets converted into nitrites and nitrates .
Then these nitrites and nitrates with the help of bacteria like pseudomonas gets converted back into free nitrogen ,
This cycle helps in enriching the soil and to maintain nitrogen percent constant in atmosphere ,
The biogeochemical cycle : for nitrogen is attached below