A permeable rock mass must be porous (or fractured), but a porous rock mass may not necessarily be

permeable. Indicate whether the statement is true or false.


T

Environmental & Atmospheric Sciences

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Subduction produces mountains because subduction zones are the upwelling zones of mantle convection, which lifts the earth's surface to form mountains

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Of the following choices, which kills the most crop-eating insects each year?

A. spiders B. pesticides C. insecticides D. grasshoppers

Environmental & Atmospheric Sciences

About how large can raindrops get? Why can't they get any larger? What shape does a large raindrop have? What forces determine this shape?

What will be an ideal response?

Environmental & Atmospheric Sciences

What are some examples of barriers to dispersal of organisms? What are examples of factors that would act as filters to only certain species? Why do you think this study looked at only nonflying mammals?

Environmental & Atmospheric Sciences