Answer:
The correct option is option c.
Explanation:
Now the distance from Sun is the critical value here and the distance is smallest for Mercury thus the only possible option is option C.
The option a is not true as the distance of Mars from the Sun is too far to be the center cold.
The option b is not true as the distance of Earth is optimum
The option d is not true as the distance of Mars from the Sun is too far to be the center cold.
Answer:
The lowest market point was reached in 2008, due to the financial crisis that started in late 2007.
This financial crisis was caused by the crash of the mortgage-backed securities that many financial institutions and investors held. When the holders of these mortgages became unable to pay, the market for these securities collapsed.
Demand began to fall sharply in the year 2007 for the same reasons above. The crisis, at first financial, soon spread to the rest of the economy, and demand in other sectors of the economy fell accordingly.
Answer: was known as early as Pythagoras (580-500 B.C.E.)
Explanation: The "realization" that the earth was spherical has been mentioned early in by Greek philosophers.
Even Armenian scientist Anania Shirakatsi (610-685 AD) subscribed to the idea of a spherical Earth.
That was thanks to scientists, philosophers and mathematicians who, as early as around 600 B.C., made observations that Earth was round. Using calculations based on the sun’s rise and fall, shadows and other physical properties of the planet, Greek scholars like Pythagoras and Aristotle determined that the planet is actually a sphere.
Answer: The various planets are thought to have formed from the solar nebula, the disc-shaped cloud of gas and dust left over from the Sun's formation. The currently accepted method by which the planets formed is accretion, in which the planets began as dust grains in orbit around the central protostar.