Type your response in the box. Multiple sclerosis (MS) is a disease that affects the nerve cells of the brain and the spinal cord. Some of the symptoms of MS are chronic pain, pins-and-needles sensations, muscle weakness, and visual disturbances. Study the image, and then explain the cause for these symptoms.

an illustration showing a nerve with healthy nerve cells, and a nerve with damaged nerve cells affected by multiple sclerosis

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

links? do you have a link? i don't see anything?

answer; endoplasmic reticulum;

not sure if this is what you'r looking for prokaryotes have organelles hope this out at least.