D. dinosaurs were too intelligent to cooperate with plants. E. mammals are warm-blooded, so do not need to eat large volumes of plants to survive. B. insect species can be programed to look for specific flowers. C. plants have to build structures that attract insects. D. pollen distribution is directed, not random.
E. plants can localize the parts of the plant that are used by insects.
The Cretaceous-Tertiary extinctions had minimal impact on Mesozoic marine communities. Which of the following groups were generally unaffected by the Cretaceous-Tertiary extinctions. A. dinosaurs, ammonites, corals. B. zooplankton, sponges, marine reptiles C. pterosaurs, sauropods, theropods. D. birds, mammals, land plants.