Which is Earth's largest source of drinkable water?

Y=‐1x + 7 if y has a value of ‐24 what is the value of x?

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.