Author Question: Unlike the United States, Canada has experienced considerable emigration, or out-migration, most ... (Read 203 times)

erika

  • Hero Member
  • *****
  • Posts: 522
Unlike the United States, Canada has experienced considerable emigration, or out-migration, most often to Europe.
 
  Indicate whether the statement is true or false

Question 2

Why are bright, blue stars and dim, red stars not good candidates for supporting habitable planets?
 
  What will be an ideal response?



marict

  • Sr. Member
  • ****
  • Posts: 304
Answer to Question 1

FALSE

Answer to Question 2

For dim, red stars, the habitable zone typically exists within the tidal locking radius of the star, which forces the same side of a planet in the habitable zone to face the star at all times. This is detrimental to the habitability of the planet, as the two sides of the planet will experience extreme conditions.
Bright, blue stars spend a relatively small amount of time in the main-sequence stage of their evolution. This leaves significantly less time for life to evolve, thus decreasing the habitability of the planet. Furthermore, bright, blue stars have high UV fluxes which could be detrimental to life, particularly for plants on a planet without a significant UV screen.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

For a complete list of videos, visit our video library