Explanation:
part A
we know how much erg of radiant energy the sun produces for one second so to find out how much it produces for 2.45 ⋅ 10^5 seconds we only should multiply these seconds to the erg of radiant energy it produces for one second
amd we get 9.555*10^38erg of radiant energy
Part B:
0.0074mm knowing that blood cell is very small to be seen normally without microscope.
and 7400mm is a measure that is quite big for a blood cell. So it remains that 7.4*10^-3 is the right one.
The Populist also known as the People's party on July 4, 1892.
"<span>Social stratification developed based on newly specialized jobs" is the best option from the list, since this was due to the recent ability to domesticate plants and animals.</span>
Marco Polo found a new trade route (possibly several) that expanded trade in Europe.
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