Initially, fewer neutrinos were detected than predicted by ...

[bobbie]

Initially, fewer neutrinos were detected than predicted by theoretical models because
 
  A) neutrinos changed form to undetected types of neutrinos.
  B) the wrong liquid was being used in neutrino detectors.
  C) particle physicists did not understand the proton-proton chain.
  D) the proton-proton chain does not actually produce neutrinos.
  E) neutrinos take many years to pass out of the sun from its core.

Question 2

Star formation may be triggered by ________ which aid gravity through compression of interstellar clouds to greater densities.
 
  Fill in the blank(s) with correct word

[bbburns21]

Answer to Question 1

A

Answer to Question 2

pressure or shock waves (from supernovae)

[bobbie]

Wow, this really help

[Sarahjh]

Excellent