Hurry will mark brainilest

tessa conducted a demonstration about the movement of materials in and out of cells. she closed the door to her classroom, then sprayed a little perfume in the corner of the room. she drew this diagram to represent the room, with the dots representing the perfume molecules. which statement best describes what tessa should tell the class about the diagram? diffusion has already occurred. diffusion will occur. active transport has already occurred. active transport will occur.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

bcde is the incorrect answer it is a