Which process causes currents in the atmosphere?
A. tides moving in the oceans
B. condensation of water as clouds form
C. heat moving in the mantle
D. uneven heating of earth's surface by the sun

Which of the following is not one of the mechanisms of enzyme catalysis by which the substrate is converted to the product? a. changing substrate orientation b. changing substrate reactivity c. inducing strain in the substrate d. preventing an induced fit d. preventing an induced fit