Within a flock of birds, some birds have long narrow beaks, and other birds have short wide beaks. environmental changes happen that make it harder for birds that have short wide beaks to find food. after several generations, most of the flock has long, narrow beaks. which statement best describes the trait of the type of beak that a bird in this flock has? having a long, narrow beak is an inherited trait that is genetically passed down. having a long, narrow beak is an acquired trait that is determined by the availability of food. having a short, wide beak is an acquired trait that is found in birds that have learned to adapt to the environmental changes. having a short, wide beak is an inherited trait that is chosen by the bird as a result of its experiences.

The correct answer is "Having a long, narrow beak is an inherited trait that is genetically passed down".

Environmental changes cause the organisms to accumulate changes which are required to survive in the changing environment. The organisms accumulate the variations which help them to survive in an unfavorable environment. As soon as the environment changed and it became difficult for the birds with short wide beaks to find food, they started accumulating changes in their body which caused them to have mutations which led to the long narrow beaks making them fit to live in the changing environment. These mutations were then passed on to their upcoming generations.

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.