I think the answer would be D goodluck

The designation Rr for a pea-plant's peas shows that the plant is a <u>true-breeding plant</u>.
The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules.
Answer:
bottom of the periodic table
Explanation:
In competition, males use feather color to warn potential rivals that they occupy a piece of territory.