Which of the following statements is true? The troposphere is made of layered gases. In the water cycle, the amount of water which evaporates equals the amount of water which falls as precipitation. Burning fossil fuels increases the amount of ozone in the atmosphere. Nitrogen is added to oceans by special nitrifying bacteria.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience. b. report the adverse drug experience to the irb only if there are several other occurrences. c. report the adverse drug experience as part of the continuing review report. d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.