Answer:
Evolution
Explanation:
If there is an environmental stressor, then animals will evolve to overcome it.
Birds may begin producing more or fewer offspring depending on how much food is available. If there is more food available, birds will have more offspring. If there is less food available, birds will produce fewer offspring.
Beak characteristics change depending on food options, mating rituals, or environment. A bird will need a narrow beak for most bugs, but it will need a wider and stronger beak for nuts and seeds. A bird's beak may also be used to help interact with its environment. For example, a woodpecker has a strong narrow beak to help it break into tree bark to eat.
Answer:
I belleive A is the correct answer, here is why
Region: geography, regions are areas that are broadly divided by physical characteristics, human impact characteristics, and the interaction of humanity and the environment.
If that is correct then it is compleetly possible for animals to migrate over different regions
Vaccines will provide immune protection for Robin because immunization is one of the main ways to prevent disease. Through it, the body is protected from viruses and bacteria that seriously affect the human being, which can lead to death.
<h3>Why vaccinate?</h3>
After application of doses, the vaccine interacts directly with the patient's immune system, thus producing a response similar to that generated by natural infection. However, it does not cause illness or risk the life of the immunized patient due to possible complications of a naturally caused disease.
With this information, we can conclude that vaccines will provide immune protection for Robin because immunization is one of the main ways to prevent the disease. Through it, the body is protected from viruses and bacteria that seriously affect the human being, and can lead to death.
Learn more about vaccine in brainly.com/question/6683555
