White dwarfs were once the cores of stars that produced planetary nebulae.
Indicate whether the statement is true or false
Question 2
All but one of the following statements describe why scientists doubt the solar sunspot cycle affects global climate. Identify which statement is irrelevant to the explanation.
A) Solar winds can affect satellite communications.
B) The variations in solar particle winds do not change the temperature of the Earth's ocean or ground.
C) The solar cycle varies every 11 years; average Earth temperatures do not show an 11 year variation.
D) Variations in solar activity affect the Sun's luminosity by a very tiny amount.
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Laboratory-Produced Protocells