Leaf development describes the coordinated morphogenesis process by which a leaf is formed, and grows to become a mature photosynthetic organ. It starts from the initiation of a primordium in the ...

Abstract festive vertical video background with animated green four leaf clover leaves or lucky shamrocks falling on white backdrop. Decorative celtic animation for St Patrick's Day celebration.

As they rushed to help him, he urged them to save his teenage son still trapped after their four-wheeler wrecked ... The National Weather Service issued a Red Flag Warning over the state early Monday ...

As they rushed to help him, he urged them to save his teenage son still trapped after their four-wheeler wrecked ... The National Weather Service issued a Red Flag Warning over the state early ...

We've got you covered! Related: 50 Best St. Patrick's Day Wishes To Toast Your Friends and Family Why Is a Four-Leaf Clover Considered Lucky? Four-leaf clovers are considered lucky for their rarity.