Life may be less likely around A- and F-type stars because A) ...

[ghost!]

Life may be less likely around A- and F-type stars because
 
  A) they emit large quantities of ultraviolet radiation
  B) they experience violent surface activity
  C) their habitable zones are very narrow
  D) rocky planets are unlikely to form around them

Question 2

The horizontal component of the velocity of a projectile remains constant during the entire trajectory of the projectile.
 
  Indicate whether the statement is true or false

[macagnavarro]

Answer to Question 1

A

Answer to Question 2

TRUE

[ghost!]

Thanks for the timely response, appreciate it

[phuda]

Excellent