Atens unit is
select one:
a. used to treat chronic pain
b. an electrical recording of the brain waves
c. a surgical procedure to remove plaque and prevent a stroke
d. a unit of measurement for the depth of a coma

A TENS unit is Used to treat Chronic Pain.  

Option A

Explanation:  

Transcutaneous electric nerve stimulation it is a electronic device which tends to send the current waves to the affected body parts so that with the help of electrical therapy the chronic pain can be easily dealt with.

It is generally a bigger unit used in the administrative offices like hospitals or a nursing home but you can safely use them at home for better results. The electric current is mild in nature so can be used easily and there is no harm involved.

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation: