What type of diseases that occur in circumstances in which the immune system can cause damage to the body's own tissues, e. g. scid, aids, thyroiditis?

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

According to piaget, children have acquired the cognitive skill of conservation when they're able to a. understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal. b. understand the viewpoint of other people. c. relate objects around them to their own needs. d. realize that the term heavy describes an object one way and the term big describes it another way. it is not b nor c. did this 2 x wrong..

What are the characteristics of living things