Oxygen and carbon are element combinations that will most likely form polyatomic ions.
It is usually described simply as young, mature or old. A young soil has a thin A horizon and often no B horizon. A mature soil has A and B horizons of average thickness which show some differences from each other. An old soil shows thick horizons which are very different from each other.
The depletion of natural resources, the use of chemical and fuel in factories that increased air and water pollution , and increased the use of fossil fuels.
Answer:
Half life = 79.67 sec
Explanation:
Given that:
k = 
The expression for half life is shown below as:-
Where, k is rate constant
So,
Half life = 79.67 sec
