Brenda is preparing a test paper for students in a veterinary science course. She wants an example of a substance that is toxic to horses.

In multiple sclerosis, the immune system destroys the substance that coats and protects nerve fibers in the brain and spinal cord. this causes inflammation and injury to the nerves, and the axons don't conduct impulses as well.

Why is it often difficult to get funding for local parks? a. state governments do not like to grant permits for local parks. b. federal regulations prohibit most fund raising. c. there is often a small tax base. d. federal funding cuts have all but stopped local construction of parks.

Health and cardio respiratory fitness occurs when the heart is working, at minimum, 50 percent of heart rate reserve. true or false