The surface of a protostar radiates energy while its core
A) shrinks and cools.
B) shrinks and maintains a constant temperature.
C) shrinks and heats.
D) expands and cools.
Answer: C
The surface of a protostar radiates energy while its core
A) shrinks and cools.
B) shrinks and maintains a constant temperature.
C) shrinks and heats.
D) expands and cools.
Answer: C