I need science fair project ideas. I am in 9th grade. project has to have a independent and dependent variable

The large ground finch obtains food by cracking seeds. what is its short, strong beak an example? a) tendency toward perfection b) adaptation of a species over time c) selective use and disuse of an organ over time d) scarcity of recourses

Isolated volcanic peaks on the ocean floor are

Which hormone is used by both males and female?