When planning your oral presentation, what can you do to prepare for the presentation? a) practice reading your presentation from an index card. b) practice your presentation with your eyes closed. c) practice your presentation in front of friends or family. d) practice speaking clearly and directly to an audience of friends

What happens to the temperature of a substance when the average kinetic energy of its particles increases?

Describe the magnitude of the buoyant force

Which of the following characteristics are true of enzymes? check all that apply. a.)the structure of an enzyme can change if conditions change. b.)a single enzyme can normally catalyze a wide variety of reactions under many conditions. c.)enzymes are found only in nonliving systems. d.)enzymes allow living things to regulate body conditions through feedback mechanisms. e.)enzymes bind to specific substrates in specific ways. f.)enzymes increase the rate of reaction. g.)when shown in energy-reaction diagrams, enzymes represent the higher activation energy.