The average daily
temperature of the ocean
at the north pole has
increased during the past
50 years.

At the start of the 20th century, temperatures were about 4.5°F cooler. The temperatures of the arctic are confronting the heatwave, very unusual for Arctic standards.

Explanation:

These changes in temperatures can be “grateful” to climate change. The climate changes will continue with raising the temperature in the Arctic. These climate changes are so usual at this moment on the Earth, that in a few decades people will be used to heat.

show me the image i cant tell

doctrine that the us had the right to expand throughout north america.