Atlantic, Pacific, Indian, and Arctic Oceans
Answer:
D. were widespread due to many low-lying land masses.
Explanation:
Cambrian Period was the first geological period of the Paleozoic Era, it occurred between two ice ages; Proterozoic and Ordovician. During these era, there were mass extinctions due to the decrease in global temperature.
Cambrian seas were widespread due to many low-lying land masses.
Answer:
It is the set of research technology transfer initiatives occurring between 1950 and the late 1960s, that increased agricultural production worldwide