Dinosaur and ancestral bird fossil data from the Triassic, Jurassic, and Cretaceous time periods were used to estimate body mass. Scientists are examining the connection between body mass, niche saturation, and extinction of species in the Triassic, Jurassic, and Cretaceous time periods. The terrestrial dinosaurs’ neck length and diet are compared to the evolution of the winged dinosaur through the three time periods.   Which of the following statements best states the null hypotheses regarding winged dinosaurs? The greater number of herbivore dinosaurs throughout all the periods inhibited the evolution of winged dinosaurs due to a lack of available resources and habitat. A greater number of winged dinosaurs of the early Cretaceous period become extinct as fewer winged dinosaurs with greater body mass evolve to take over their niche. The extinction of long-necked herbivores in the late Jurassic period provided a greater amount of habitat and food resources for early Cretaceous period winged dinosaurs. The greater total body mass of the terrestrial dinosaurs means they used large amounts of space and food, which prevented the evolution of the winged dinosaur.

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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.