What Is the climate in western Siberian plain??

i

Explanation:

In January, average temperatures range from −15 °C (5 °F) in the southwest to −30 °C (−22 °F) in the northwest. In the summer, the range is from 20 °C (68 °F) in the south to 10 °C (50 °F) in the north. Because the terrain is flat, cold air masses from the Arctic can penetrate deeply.

hope this helps,

pls mark brailiest

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.