Atow truck is towing a car. if the tow truck stops abruptly and the car collides with it, what is the relation between the forces on both vehicles?

Ineed the problem dude

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

Shania is trying to determine the oldest geologic unit on this map and the reason to why is she unable to do so is that  the units are all the same age.. when there is the same age, there will be no oldest geologic unit and that i cannot be credible.

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.