Question

best friends mickey and mo love to pretend they are identical twins. but when you look at their earlobes, you can tell that they arent! is this trait due to nature or to both nature and nurture? two buttons: nature; nature and nurture

Explanation:

Earlobe traits (like attached or free earlobes) are determined by genetic factors (nature). Nurture (environmental factors) doesn't influence earlobe structure, so the trait is due to nature.

Answer:

nature (the button labeled "nature")