Canada has really impacted by natural weather hazards because of its cold oceans and lack of what?

Canada has really impacted by natural weather hazards because of its cold oceans and lack of Extreme temperatures.

Explanation:

The stretches of Canada is from Atlantic ocean to the Pacific Ocean in the east and west respectively.  It is the ice and frost that covers the Canada. The Climate of Canada is diversified. Mainly it is full of snow and polar climate exists. The wetlands in Canada are drained because of the necessity to use these lands for Agricultural, Commercial and industrial usages.  

An important and a continuous danger that exits in North Canada is Permafrost. The lakes and forests are greatly affected because of acid rain and Air pollution. These natural hazards are mainly due to the cold oceans and lack of extreme temperatures in Canada.

the answer is the last option or letter d)