Explain How a chloroplast helps a cell get the meterials it needs

chloroplasts work to convert light energy of the sun into sugars that can be used by cells. Its like a solar panel that changes sunlight energy into electric energy. The entire process is called photosynthesis and it all depends on the little green chlorophyll molecules in each chloroplast.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.