It's work 25+ points and only have 20 minutes which of these are characteristics of reptiles? check all that apply. they undergo internal fertilization. their urine is concentrated. they use their skin for gas exchange. they have two-chambered hearts. they are covered in scales.

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