21 The flowers that feed hummingbirds have long tube-like pedals. Suppose the flower pedals grew even longer. The only
hummingbirds who could get to the nectar were hummingbirds with the longest beaks. What type of selection is this?
A Stabilizing selection
B Disruptive selection
Directional spection
D Sexual selection

What is the name of the type of cell division that occurs in the prokaryotic cell cycle

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?

What substance acts to prevent sudden ph changes in bodily fluids?