2. Using Chapter 40 (especially Fig 40.4) of our textbook, compare the circulatory systems of the perch and the frog by completing the following table: Comparison of the circulatory systems of the frog and the perch Open or closed Single or double circuit perch frog Number of atria Number of ventricles 3. Compare and contrast (in other words, describe similarities and differences of) the circulatory systems of the perch and the frog, with reference to how each system supports the lifestyle (including activity level) of each animal:

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Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.