Answer:
Using a control group means that any change in the dependent variable can be attributed to the independent variable.
Explanation:
Answer:
Brooklyn with 2.3 million people living there.
Explanation:
Answer:
Movement of people between places on a regular basis → cyclical migration
Study of population → demographics
average number of children a woman will have in her lifetime → fertility rate
the number of people who live in a square mile or kilometer → population density
people who leave their homelands seeking safety in a foreign country → refugees
Explanation:
Migration is the movement of people from from one place to another. A cyclical migration is a kind of movement that is a routine and are usually short.
Demographics is the study of population base on age , race, gender etc.
fertility rate is said to be the measure the number of life birth of a woman in a specific period of time . Fertility rate gives information on how fertile a woman is.
Population density is the number of people per unit area. It gives information on the population per geographical area.
Refugees are individual that have been forced to live their countries to seek refuge in another country as a result of violence or persecution.
<u>Answer:</u>
<em>Rigel and Betelgeuse </em>
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<u>Explanation:</u>
Rigel and Betelgeuse are counted in the brightest stars of the galaxy.
They form a pair in the Orion constellation.
The Rigel star is situated near the Equator. This star is invisible in the region around and above of latitude 82°N and can be seen from any part of the world. It is a blue white giant star. This makes Rigel helpful in navigation.
Betelgeuse is a red giant star which is visible from naked eye. It has the same diameter as that of Jupiter.
