When a cell reproduces by mitosis, the cell
A) Produces a sex cell.
B) Makes an exact copy of itself.
C) It creates a cell that is different from itself.
D) Produces four other cells.

your answer is like this

Explanation:

B) Makes an exact copy of it self.follow me

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If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.