Study the given figure and calculate the efficiency

Wavelength divides in half and speed stays the same.

The fertilized egg  begins to develop into a hollow ball of cells called the blastocyst. 

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.

Binary fission and mitosis