Australia, bird with three-toed feet
Not what you're looking for?
A. At one time the continent of Australia was connected to Asia. About 50 million years ago Australia became separated. It has many unusal animal not found elsewhere, such as the kangaroo and the koala bear. Using the concepts of geographic isolation the gene pool, explain why these animal developed.
B.A species of bird with three-toed feet feeds mostly on worms and crwling insects. Over a period of several thousand years, the ocean level rises, and the region where the bird lives is flooded. Over several thousadn years ago or so, the birds' descendants evolve webbed feet and begin to feed on fish. Is this an example of gradualism or punctuated equilibrium? Can you give me an explanation of this answer?
Purchase this Solution
Solution Preview
A. Australia probably (but this is not absolutely certain) became isolated with a large number of marsupials on it. (Such exist also elsewhere, for example the American Opossum). So the whole - or almost whole - animal population of Australia ...
Purchase this Solution
Free BrainMass Quizzes
Understanding the Musculoskeletal system
Introduce and understand basic information how the skeletal system and muscular system work in close concert with one another. And how their interaction between muscle and bone, as they work together to allow us movement.
The Plant Body
This quiz will test your knowledge of the anatomy of a common plant.
Vision and Oculomotor Control
This quiz will test the student's knowledge of the neural underpinnings of the visual system and its central pathways.
Birth 101
Do you know about childbirth? Find out with this quiz.
Nerves and the Nervous System
This quiz will assess your knowledge of the nervous system and how nerves send signals around the body.