A hunter tells his doctor that he's been feeling fatigue, headaches, and dizziness for the past two weeks. Upon examination, the doctor notices the man has a red rash on his leg that has a red center surrounded by rings of lighter red. Which disease does the doctor suspect?
a. plague
b. Lyme disease
c. ehrlichiosis
d. tularemia

The correct answer is option b. "Lyme disease".

Explanation:

Lyme disease is an infectious disease caused by exposure to ticks that have the Borrelia bacterium. There are different symptoms that reveal that a person has Lyme disease, but the most common and prominent is the presence of an expanding area of redness on the skin that appears at the site where the tick bite. In this case, the person has the red rash on his leg and since he is a hunter, it is very likely that he was exposed to a wild area where ticks were present.

Lyme disease

Explanation:

Lyme disease can also be referred to as Lyme borreliosis. It is a bacterial  infection generally caused by the Borrelia bacterium carried by deer ticks. One of the major symptoms of the Lyme disease is skin redness. This redness usually occurs one week after a patient has been bitten by a tick; the redness occurs at the site where the patient is bitten.

Other symptoms include joint pains, inflammation etc.

The hunter might have been bitten by a deer tick, hence the redness and the other symptoms, the doctor suspects Lyme disease.

it is a learned trait

explanation:

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.