Answer:
I think that birds have different bill lengths because of their habitats and their diet. Also natural selection and evolution has also played a factor due to the fact that birds have not always looked the way that they do now, for example the Archaeopteryx a bird that lived around the time of the dinosaurs had a shorter and more powerful bill to grind insects and small mammals
Explanation:
Answer:
B.
Explanation: Hope this helps! ^^
Leptin hormone is the hormones which appears to be designed to protect the body against weight loss.
Leptin hormone is secreted from fat cells and it helps to regulate body weight. Leptin hormone is predominantly made by adipose cell that help to regulate energy balance by inhibiting hunger. leptin hormone is opposed by the action of the ghrelin hormone which is a hunger hormone/
Plants and fungi both have cell walls, which provide them with support and structure. But one main difference is that plants, unlike fungi, have the ability to photosynthesize.
Answer:
Cell,tissue, organ, organ system, Organism
Explanation:
because cells make tissues and tissues make organs and many organs make organ systems.
