Fill in the blanks with the word that best completes each statement. Scientists develop knowledge by making -about the natural world that may lead to a scientific question. A scientific question may lead to a(n) -which can be tested. The results of -can lead to changes in scientific knowledge.

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

Which of the following methods uses the decay of atomic particles in an object to find its exact age? a. fossil dating b. geologic dating c. radioactive dating d. relative dating

Ab c or d ? i’m not sure what the answer is