The rivers of North America flow eastward or westward at the Continental Divide because it is situated along the highest points of the Rocky Mountains.
the Rocky Mountains have not yet experienced significant erosion.
the rivers mark areas of mineral deposits.
the environment was artificially altered to improve water flow to agricultural areas.

yes it is weird but true

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u