What type of disorder is myasthenia gravis? a. immune disorder b. inflammatory disorder c. structural disorder d. infectious disorder

Immune disorder'" because Myasthenia gravis is a chronic autoimmune neuromuscular disease characterized by varying degrees of weakness of the skeletal (voluntary) muscles of the body. The name myasthenia gravis, which is Latin and Greek in origin, literally means "grave muscle weakness."

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it