The thick folds are called gyri
This diagram does. it shows everything.
Silicate minerals are the most common of Earth's minerals and include quartz,feldspar, mica, amphibole, pyroxene, and olivine. Silica tetrahedra, made up ofsilicon<span> and oxygen, form chains, sheets, and frameworks, and bond with other cations to form silicate minerals.</span>
Explanation:
chicken because ducks take 28 days , turkeys take 28 days , geese take 28 - 33 and the chicken takes 21 days