The pupil opens and closes automatically in response to light. So what part of your nervous system controls this response??

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Look at the photo of the leaf. which term best describes this leaf?

The transport tubes from food came down the plant are called?