Which sentence from the article shows Alaska's MAIN problem? A
Anchorage, Alaska, experienced record warmth and set a snowfall record on the same day.
B
Anchorage is a city that picked up a record 8.4 inches of snow and set a record warm high temperature on November 16.
C
On November 16, a brief southerly wind ticked the thermometer from freezing to the mid-40s in two hours shortly after midnight.
D
Much of Alaska's recent warmth can be traced to disappearing Arctic sea ice in the Chukchi and Bering Seas.

Try D

Explanation:

I feel like it is because the problem is the sea ice disappearing,and it's making Alaska warm-which is a problem

not only is it colder, it also becomes darker, less salty, and more dense.

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!