Think about a construction crane moving a steel beam. Where does the energy used to complete the task come from? What evidence do you have that the amount of energy involved in the crane example is different from that in the wind-up toy example?

What happens to isotopes that are unstable?

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d

Correct relationship between molecular formula and empirical formula