D. Obviously because it was large and they didn't have a lot of supplies to go across also it was very deep.
It is called surface currents.
he WEST SIBERIAN Plain stretches across northern India and is home to one-tenth of the world's population.
Explanation:
long term and lasting progress
In my opinion the subfield of geography that is the most important is the study of climates or climatology.
<h3>What is climatology?</h3>
This is the study of climate and how it changes in the environment that we live in overtime.
The reason why this is very important is that it lets us know more about our changing environment.
The study helps us to avert the disasters that are associated with climate changes worldwide.
Read more on climate here:
brainly.com/question/17922964