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73. The weathering process of frost action can make a slope less stable.

Valleys carved by glaciers tend to be shaped like the letter __________, whereas valleys carved by water tend to be shaped like the letter __________.

Rising blood levels of aldosterone cause the kidney tubules to:

Pumping vast quantities of water locally

Which of these hormones prods the thyroid gland to release thyroxine:

The thyroid gland is located:

The elevation of the water table

The ovaries release estrogen and progesterone in response to gonadotropic hormones from the pituitary gland.

Why are artificial levees useful for only some flooding events?

Rates of groundwater flow are __________ than stream flow because the water __________.