Also, intersexual selection, or mate choice, occurs when females choose between male mates. Traits selected by male combat are called secondary sexual characteristics (including horns, antlers, etc.), which Darwin described as "weapons", while traits selected by mate (usually female) choice are called "ornaments".
The answer is C. 1, 5, 4, 6, 3, 2.
Answer:
The movement of ions or molecules across a cell membrane into a region of higher concentration