What is sunflowers protective structures?

Why are my parlor palm's leaves turning yellow? What ground cover grows wild in the woods? What does not go in garden compost? What are some ways of dealing with black mold that grows between the walls of a house? Will the leaves grow back on my lemon tree? How can I effectively incorporate corn cobs into my compost pile to enhance the decomposition process? What do mangroves look like? Can hibiscus flowers cross pollinate? Does Cameroon have green cardamom? Where was the garden of eaden? Does a flower have fur? What are the roles of roots in a plant? How can I successfully cultivate mushrooms growing in plant material? How can I make my Monstera plant grow upright? Why is it important to address the issue of oil on spark plugs in a lawn mower? Where does Rachel De Thame live? How can I effectively eliminate ants from my lawn without causing harm to the grass? Which small colonial farm who most likely did the planting caring for and harvesting of the crops? Why is a banana classified as a fruit? How can I effectively incorporate fertilizer balls into potting soil for optimal plant growth?