The most likely effect of the rising temperature of the earth and melting of ice would be:
D). Populations of walruses and polar bears will decline.
Climate change has been one of the major issues across the globe with the constantly increasing temperatures.
This is leading the glaciers to melt, undesirable changes in the weather, and an unnecessary rise in the sea level.
This increase in sea level is resulting in a fall in walrus population and polar bears as well.
Thus, option D is the correct answer.
Learn more about "Temperature" here:
brainly.com/question/7510619