Around 1800 (plus or minus about 5 years) is when it was estimated that the world's population had reached 1 billion.
Answer:
The orbital period of Earth in position A is greater than the orbital period of Mars in position B.
Explanation:
Since I cant see the diagram, this would be my best guess.
Answer:
a. 9:00 pm to midnight.
That is the point in Mars' orbit when it comes closest to Earth, this time at about 38.6 million miles (62.07 million kilometers) from our planet. Mars was visible for much of the night in the southern sky and at its highest point at about midnight.
<span>Population density </span><span>defines the average number of people living within a square mile.
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Answer:
If more people migrate there will be more profit made by the countries where people migrate. This means the government can spend those money to improve social places such as schools, city centers, houses, parks and etc.
Explanation:
