Using the drop-down menus below, identify the processes cells use to maintain homeostasis. is the movement of water along the concentration gradient.
is the use of energy to move particles against the concentration gradient.
is the movement of particles by diffusion without energy.
is the movement of particles along the concentration gradient.

Which tab should you open to find the option for adding a header?

When early motion pictures played in movie theaters, they were often accompanied by live organ or piano music. which of the following are the most likely reasons that this happened? (select all that apply). the music was provided to distract audience members from the loud sounds made when filmstrips were changed. the music accompanied the movies because the movies were silent and audiences were used to hearing music during plays in theaters. the music usually was played before, and sometimes after the movie, as an alternative form of entertainment. the music viewers to interpret the dramatic action in the films.

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