An individual’s EKG shows changes in atrial contraction. Which image shows contraction of the atria?

materials water oxygen those are the things i can think of in this moment.

if, i suppose that a bee stings me swinging my hand away from a bee. then that if, i persist patient when a bee or wasp areas on your surface to investigate a scent or to take h2o and i secreting heavily, the bug ultimately will move of its personal agreement. if i don't need to set for it to disappear, lightly and gently wipe it off with a part of the paper.

the growth of the plants is affected by the heat of the light. what is the student doing?