How can we select stars whose planets are likely homes for life?
What will be an ideal response?
We assume the planet must be in a stable orbit. Most binary star systems wouldn't be good candidates unless the stars are very close together or very far apart. Main-sequence stars of types G, K, and M are the best candidates because they have long lifetimes. The star's temperature is also important, if the planet is to have liquid water on its surface. A low-luminosity star has a small and narrow habitable zone, whereas a high-luminosity star has a large and wide one.
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If properly constructed, a Winogradsky column can be used to isolate pure cultures
Indicate whether the statement is true or false.
A visible red streak in an infected hand or foot is referred to as
A. septicemia. B. bacteremia. C. lymphangitis. D. edema.
Obesity corresponds to a BMI over ____
a. 20 b. 22 c. 25 d. 28 e. 30
How much of the energy that reaches Earth's outer atmosphere from the sun is available for photosynthesis in plants at Earth's surface?
A) 44% B) 1% C) 95% D) 55% E) 71%