When it comes to polar ice, many people always see a white, flawless, crystal clear landscape. However, in the Arctic Ocean near 71 degrees north latitude and 168 degrees west longitude, the "Snow Dragon" entered the "dirty" ice area for the first time. I saw a piece of pale blue floating ice mixed with many dirty yellow ice cubes. This kind of yellow ice cubes appeared on the fresh ice cubes of the year and also on the multi-year ice cubes. The term "pollution has spread to polar ice floes", and some experts explain that this is just a peculiar creature living in polar ice-yellow-brown ice algae. If the following are true, which of the following can refute the expert's view is:. ['It takes years to form ice algae on fresh ice.', 'Ice algae growth in Arctic ice is not common.', 'The number of times people have stepped on the North Pole has increased year by year.', 'Terrestrial weather around the Arctic Ocean.']