In the proton-proton chain a. no neutrinos are produced. b. ...

[colton]

In the proton-proton chain
 
  a. no neutrinos are produced.
  b. energy is released because a helium nucleus has a greater mass than a hydrogen nucleus.
  c. no photons are produced.
  d. carbon serves as a catalyst for the nuclear reaction.
  e. energy is produced in the form of gamma rays and the velocity of the created nuclei.

Question 2

The ____ produce(s) tides on the Earth.
 
  a. Moon alone
  b. Sun alone
  c. Moon and Sun

[katkat_flores]

Answer to Question 1

e

Answer to Question 2

c

[colton]

Excellent

[ghepp]

Gracias!