The correct answer is Entrance Ramp. Entrance ramp is the lane that delivers the driver to the acceleration an and primarily gives the driver time to evaluate highway traffic conditions. The acceleration lane is where the driver is to be "delivered" according to the question, and you would only merge after accelerating to the proper speed
As the earth's history was formed by a collision that led to the formation of the moon that took place about some 4 billion years ago and the earth was a then a blob of molten rock with just a thin solid film on its outer surface.
<u>What can be inferred about the different density of the earth is the earth atmospheric at that time was warm and solar radiation with a relative density and the oceanic crust has relatively more dense matter settled down and in the process known as the planetary differentiation.</u>
