Why do some molecules begin sticking together when you add in more molecules?

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Consider the story you just read. all but one of the choices below indicate that something is living.

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box