The leaf functions in photosynthesis in all of the following except A. The leaf is responsible for allowing carbon dioxide to enter, which is required for photosynthesis. B. The leaf is responsible for allowing water to enter, which is required for photosynthesis. C. The leaf is filled with chloroplasts, which contain chlorophyll that trap light energy necessary for photosynthesis. D. The leaf is responsible for releasing oxygen, which is a byproduct of photosynthesis.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.