Contrast the brightest stars of young open and old globular ...

[stephzh]

Contrast the brightest stars of young open and old globular clusters.
 
  What will be an ideal response?

Question 2

What is the result of the Greenhouse effect on the surface environment of Venus?
 
  A) It has little or no effect.
  B) Its effect is about the same as on Earth.
  C) It has reduced the surface temperature by about 30 degrees Celsius.
  D) It has raised the surface temperature by hundreds of degrees Celsius.
  E) It causes the surface temperature of Venus to become hotter than the Sun.

[jojobee318]

Answer to Question 1

Hot blue main sequence stars light up young open clusters, but the aging globular clusters have long since lost such short-lived massive stars; they have red giants as their brightest, most evolved survivors.

Answer to Question 2

D

[stephzh]

Thanks for the timely response, appreciate it

[atrochim]

Excellent