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.
Another question on Biology
Biology, 21.06.2019 22:30
Witch type of microscope is used to view very small cell components like proteins and dna?
How do plants obtain more sunlight a.) they lean towards the light b.)they grow straight up c.) they only live in sunny areas, like the tropics d.) they stay low to the ground