What is the connection between the myelin sheath and multiple sclerosis?

How is the introduction of the cane toad to queensland, australia an example of the unintended consequences of using non-native species to control pests? (site 1)

Astudent who takes a multiple-choice test by reading the stem of each item, generating the correct response before looking at the choices, and then chooses the response closes to the answer is using a.a heuristic b.an algorithm c.vicarious problem-solving d.means-end analysis

What are the main functions of the human skeleton? a exchange of gases b support and movement c sensing the environment d digestion and excretion