Question

my name start with a r and s help you to fight diseases​

Answer 1

Answer:

Coronaviruses are a group of related viruses that cause diseases in mammals and birds. In humans, coronaviruses cause respiratory tract infections that can range from mild to lethal.

Explanation:

hopefully this will help u

Answer 2

Answer:

Alopecia areata is a disease that causes round patches of hair loss. It can lead to total hair loss. Alopecia areata is an autoimmune disease. That means your immune system, which normally helps protect the body from infection and disease, attacks the hair follicles.