N LINNKKKSSS RIGHT ANSWERS ONLY The artic tundra, though very cold for much of the year, is said to be more strongly defined by its cool summer temperatures, instead of its winter lows why?

A. because these low summer temperatures cause rapidly changing weather

B. because these low summer temperatures limit the growth of plants in the summer

C. because these low summer temperatures cause large masses of ice that do not even totally melt in the summer

D. because these low summer temperatures cause a rain-shower effect