What is the role of myelin in neurons? a. to change the direction that na+ and k+ move through ion channels during the action potential. b. to increase the speed that action potentials travel down the neuron. c. to prevent the neuron from generating action potentials. d. to cause multiple sclerosis when present and intact, as it blocks action potential movement and must be removed by the immune system.

Benito is doing research on the effects of florida's elevation on its climate. his notes include the following: 1. the average elevation of florida is 30 m above sea level. 2. the highest point in florida is britton hill, which is 105 m above sea level. 3. the change in temperature from 0 m to 1,000 m is 7 °c. what can benito conclude about the effects of florida's elevation on its climate? a.) florida typically experiences cold temperatures and temperature changes within a narrow range. b.) florida typically experiences cold temperatures and temperature changes within a broad range. c.) florida typically experiences warm temperatures and temperature changes within a narrow range. d.) florida typically experiences warm temperatures and temperature changes within a broad range.