1 kilogram weight gain- Secondary consumer Trophic level 4 10 kilograms of salmon- Secondary consumers Trophic level 3 100 kilograms of krill- Primary consumers Trophic lovel 2 Rectang Trophic level 1 1000 kilograms of phytoplankton- Producers Figure 10 A food pyramid. It takes 1000 kilograms (about 1 ton) of phytoplankton (microscopic marine plants) to provide a 1-kilogram (2-pound) weight gain for a human. Notice that only about 10 percent of the stored energy in ona tronic Javel is gventually pappad on to

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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.