Question

why do you think the snow has been described as sterile​

Answer 1

Answer:

That is pretty much the reason why for a long time scientists thought polar ice and snow was considered to be a sterile environment. ... Tiny gas bubbles get trapped in the mixture and compress together with snow. Respiration of bacteria increases CO2 levels in these tiny pockets of air.

Answer 2

Explanation:

that is pretty much the reason why for a long time scientists thought polar ice & snow was considered to de a sterile enviroment . tiny was bubbles get trapped in the mixture & compress together with snow