Author Question: Which statement about the stages of starbirth is FALSE? A) At stage 1, only the cloud exists. B) ... (Read 39 times)

V@ndy87 · **on:** Jul 27, 2018

Which statement about the stages of starbirth is FALSE?

A) At stage 1, only the cloud exists.
B) By stage 3, the star has formed a photosphere.
C) Nuclear reactions begin in the core by stage 4.
D) The T-Tauri wind is prevalent in stage 5.
E) By stage 7, the star has reached the main sequence.

Question 2

About what percent of all asteroids are C-type asteroids?

A) 5
B) 10
C) 15
D) 50
E) 75