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

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

The green colored pigment in chloroplasts is? a. nitrogen b. chlorophyll c. chlorophorm d. chlorofloromethane