Which of the following must have occurred in order for the inner planets to grow?
A) explosions in the Sun
B) solar wind blasted gases out of the nebula
C) temperatures cooled throughout the nebula
D) dust was delivered to the nebula by asteroids and meteors
Question 2
Why did the first planetesimals form at the outer edge of the nebular disk?
A) The smaller particles were gathered at the outer edge.
B) The heat of fusion was more favorable there.
C) Cooler temperatures favored condensation there.
D) The planetary accretion gravity spun the planetesimal particles to the outer edge.
Dwarf Planets
Current Positions of Known Dwarf Planets and SSSBs in the Outer Solar System
Metastasis Cancer Order
Higher-Order Conditioning
First-order sensory neuron with free nerve endings
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