What is a "main sequence star"?
A) a star that falls in a band in a band on the H-R Diagram with most other stars
B) a star that is statistically indistinguishable from 90% of all stars
C) a star that shows the same trend in distance from earth and temperature as many other stars
D) a star that is aligned with many other, similar colored stars
E) a star that is in a group of stars with similar ages and sizes
A
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A good example of South Korea's "hallyu" becoming global is
A. the popularity of Psy's "Gangnam Style" video. B. the spread of the Korean pickled cabbage dish known as Kimchi. C. the presence of many Korean immigrants in the United States D. the popularity of Korean TV dramas in Japan.
Explain how density differs from patterns and concentration
What will be an ideal response?
?An ecological footprint is the amount of biologically productive land and water required to supply a population in an area with renewable resources and recycling of wastes and pollution.
Answer the following statement true (T) or false (F)
The distance between consecutive wave crests or wave troughs is the __________.
A. fetch B. backwash C. wavelength D. refraction E. wave height