What is permafrost?
What will be an ideal response?
Peremafrost is permanently frozen ground and is defined simply in terms of temperature (in other words, there doesn't actually have to be ice present).
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Map algebra is limited to the use of a single layer as the input.
Answer the following statement true (T) or false (F)
Which side of this molecule has a negative charge?
A. 1 B. 2 C. 3 D. All of these choices are correct. E. None of these choices are correct.
The Bergeron process causes cloud droplets to grow because:
A) larger drops fall and collect smaller droplets in the cloud. B) freezing nuclei are much more common in the atmosphere than other condensation nuclei. C) water freezes instantly when its temperature reaches 0°C. D) the saturation vapor pressure is lower near ice crystals than it is near supercooled droplets.
The 41,000 year variation in the tilt of Earth's axis is called the:
a. precession cycle. b. eccentricity cycle. c. obliquity cycle. d. unicycle.