Compared with today, the temperature on Earth during its first half-billion years was probably
A. considerably warmer.
B. considerably colder.
C. about the same as today.
D. about the same as today on average, but the diurnal fluctuations were much greater.
Answer:A
Compared with today, the temperature on Earth during its first half-billion years was probably
A. considerably warmer. B. considerably colder. C. about the same as today. D. about the same as today on average, but the diurnal fluctuations were much greater.