Central Arctic was ice free during summers once: Scientists
Q. Central arctic was ice free during summers some 6 to ___ million years ago, according to research- Published on 11 Apr 16a. 7
b. 8
c. 9
d. 10
ANSWER: 10
Central arctic was completely ice free during summers 6 to 10 million years ago and sea surface temperature reached 4 to 9 degree celsius, according to a new study. In spring, autumn and winter, ocean was covered by sea ice of variable extent, according to researchers. In spring, winter and autumn however, large undersea mountain range in central arctic, were covered by sea ice of variable extent along with the oceans.
