Sperm must be deposited and transported to the site of fertilization. Ovulation must occur and the egg must be "picked up" by the tube. Union between the sperm and egg must result. The embryo must implant and begin to grow in the uterus.
The measurements which are based on the powers of tens are the Metric System .
A transposon<span> is a sequence of DNA that can move to new positions within the genome of a single cell.
Hope that helps ya</span>
The new discovery would support the number 2 theory, the ''Impact theory''.
It can very easily be seen why the new discovery supports the ''Impact theory''. A large crater, is most commonly created by a space body that falls on the surface of the Earth, a meteorite or asteroid would be the prime suspects. Also, there have been found minerals in the crater that are commonly found on Earth, which also suggests that this minerals came to this place from outer space and were deposited during the impact. The radioactive dating confirms the period of time to be the one when the dinosaurs went extinct. So all three clues lead us to believe that the ''Impact theory'' is the one that is the most relevant about the extinction that occurred around 65-66 million years ago.