The arctic 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? Question 3 options:

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

Because these low summer temperatures cause a rain-shadow effect

Because these low summer temperatures limit the growth of plants in the summer

Because these low summer temperatures cause rapidly changing weather