Give you examples of external and internal leaf?

External leaves, such as the oak or maple leaves, are typically broad and flat, designed to capture sunlight for photosynthesis and often exhibit vibrant colors in the fall. Internal leaves, like those found in certain plants such as the aloe vera or some types of succulents, are modified to store water and nutrients, often appearing fleshy or thickened. Both types serve crucial functions in their respective environments, adapting to different conditions and needs.