Answer is A. Because natural selection the iguanas that can swim better would survive more and reproduce more. Webbed feet and flat tail would help with swimming.
Nervous, circulatory, integumentary, muscular, skeletal systems
It’s the transcontinental railroad i’m pretty sure
<span>A beam of light aimed at a particular area is known as focused. The focused beam is concentrated in one area and not disbursed like other lights there to set mood, but instead to give focus to one individual or group on stage.</span>