Explain the mechanics of solifluction and the landforms expected as a result of solifluction
What will be an ideal response?
Answer: Solifluction is a form of creep occurring on slopes underlain by permafrost. The active layer at the top of the permafrost thaws in summer and the meltwater (and additions of rainwater) saturate the space between soil particles. The material sags downhill very slowly at rates of a few centimeters per year. The prominent effect on the landscape is a series of arcuate lobes which can appear many meters from where the soil material originally detached.
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Critical Thinking
Consider the accompanying diagram. Do you think it is more likely that more renewables will be used proportionally in the future as energy inputs, or that less of the output will be waste? Why or why not?
What will be an ideal response?
The universe is presently contracting. Indicate whether the statement is true or false
Which of the following best matches the description?Increases in the amount of material at successively higher trophic levels.
A. macronutrients B. organophosphate C. micronutrients D. chlorinated hydrocarbon E. biomagnification F. biocide G. persistent pesticide H. rodenticide I. micronutrient J. pheromone K. hard pesticide L. herbicide M. soft pesticide N. weed O. auxin P. fungicide Q. macronutrient
Because of global warming, sea levels are expected to rise ________ by 2100.
A. Approximately 20 feet B. 3-6 feet C. 1-2 feet D. 6-8 feet E. None of these are correct; sea levels are not expected to rise