What is the pH of a 6.4x10^-10 m OH- solutions

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

What provides structure to the human body?

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