Which disorder could develop in the human
body when the immune system attacks a usually
harmless environmental substance?
(1) cancer (3) an allergy
(2) aids (4) an infection

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!