Kuiper belt objects appear to be ancient planetesimals that ...

[mmm]

Kuiper belt objects appear to be ancient planetesimals that formed in the outer Solar System but were never incorporated into a planet.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

The classification of stellar spectra started with the amount of hydrogen in the star's spectrum; however, now a better scheme uses the star's _____.
 
  a. mass
 b. diameter
 c. radius
 d. temperature
  e. luminosity

[eliasc0401]

Answer to Question 1

True

Answer to Question 2

d

[mmm]

Excellent

[Liamb2179]

Thanks for the timely response, appreciate it