In the geological past, how was the earth’s climate about 500-300 million years ago, through the Cambrian, Ordovician and Silurian periods?
A. Humid
B. Warm
C. Cold
D. Dry
Answer:B
In the geological past, how was the earth’s climate about 500-300 million years ago, through the Cambrian, Ordovician and Silurian periods?
A. Humid B. Warm C. Cold D. Dry