Changes in water pressure within guard cells cause the cells to open or close the stoma. This response helps the plant maintain homeostasis by --

A-stabilizing the plants temperature through the evaporation of water

B-regulating the amount of water the plant loses during transpiration

C-allowing oxygen needed for photosynthesis to enter the plant

D-enabling the plant to release more carbon dioxide at night for photosynthesis

i can't see the full page, therefore, can't answer it

explanation:

you can have just about every answer you can think of

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )