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Answer:
S phase is called as DNA synthesis phase.
In G1 Phase the DNA replication Begins.
During G2 phase cell grow rapidly and protein is synthesized and cell prepares itself for mitosis.
During Mitotic (M) phase, cell division occur.
spermatogenesis is the process during which the production of male sperms occur.
In oogenesis the female egg is produced. Further explanation in attached figures.
The exacted number sciences don't know.
Through the carbon cycle and ocean acidification
The Sidereal Day is 4 minutes shorter than the Mean Solar Day, because the rotation of the Earth on its axis, and the orbiting of the Earth around the Sun, are both counterclockwise, as viewed from above (or north of) the Ecliptic Plane. See planetary retrograde motion for an example of the opposite situation.
The reason that the Solar Day varies around the Mean Solar Day is that the Earth moves at different speeds through its orbit around the Sun. This is in keeping with Kepler's Second Law of Planetary Motion.
Please note that the Mean Solar Day changes over a long period of time, due to the slowing of the rotation of the Earth due to tidal forces exerted on the Earth primarily by the Moon. For example, the Mean Solar Day was about 23 hours about 250 million years ago.
Traits that are passed down on an X or a Y chromosome are sex-linked traits. Most of the time males are affected by sex-linked traits because males only have one X and a Y. The Y is the chromosome that makes a man, a man.
