There were rivers,natural ports,and the farmland was good.
Answer: The author compares the video capabilities of the two different kinds of microscopes
Explanation: Because I took the quiz and got 100% on it:D
New York's skyscrapers are as high as heaven.
Answer:2. Snowball sampling
Explanation: Snowball sampling refers to a research in which once participants behave been recruited for a study they can also recruit other participants that they know. This is useful when it is hard for a researcher to find potential participants. The name of this research comes from the fact that when you roll down the ball made from snow it will pick up some other particles along the way and it will keep getting bigger and bigger.
