As you saw in part c, stellar parallax exists only because earth orbits the sun. therefore, if the ancient greeks had measured s
tellar parallax, they would have known that their belief in an earth-centered universe was wrong. why didn't the ancient greeks measure stellar parallax?
Parallax<span> is the difference in position between two objects along two lines of sight, the distance is measured by the inclined angle between the two. In Astronomy, this is applied to measure the stellar parallax on stars, and their distance from the earth with accurate astrometry. The Ancient Greeks, with their belief in the earth at the center of the universe, not only did they not have the technology, but they also were not looking for this as an explanation. The process of stellar parallax was extremely difficult to achieve, and distances are measured by red-shift calculations on a galactic scale.</span>
Primates are remarkably the first mammals so when the earth formed about 4.5 billion years ago and the first life on earth dates to 3.5 billion years the primates did not appear before the 50-55 years ago.
Thus by the end of Mesozoic Era i.e about 65.5 million years ago, the primate started to have originated over the earth's surface. At that time the North American continent was still connected to the European landmass and India then was not a part of Asia and most of the landmasses had warm tropical or subtropical climates.
The body size of the early monkeys and apes that took the advantages of vast expanses of land and where the biggest animal to revolve around the 39-40 million years and flourished in the Oligocene Epoch.
Because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect. Click the image for a larger view. Coastal currents are affected by local winds.
The Atlas Mountain Range is a mountain range that is located in Morocco, Algeria, and Tunisia. This mountain range is not located in other states in North Africa such as Libya, Egypt, Mali, or the Western Sahara.
