What is the function of wings on a Pine seed?

How much of 25 percent nitrogen fertilizer is needed for a 970 square foot bed? Names of winter flowers? How can I successfully plant oak acorns to grow healthy oak trees? Arnold grows three differentedible taproots in his garden What could they be? Are red oak trees in Virginia? Will miracle grow work to grow my marijuana plants in? How many seeds is needed to grow one sunflower? Why are the yellow leaves on my Chinese evergreen plant turning yellow? Why do roses leaves have holes? What is the difference between a vegetatian and a veagan? How often should you water an amaryllis to ensure proper growth and blooming? How many trees does each person need? When a bee travels from flower to flower it is called what? Can tulips and pEonies cross breed? Pine trees and evergreens are categorized as what types of plants? When is rice harvested? Why is my lantana plant not blooming? What comes first fruit or seed? What type of oak trees have runners? Why do some trees have yellow leaves in summer?