occurred worldwide. The excessive carbon dioxide would have permitted solar energy to enter the atmosphere but would have blocked the radiation of most surface heat back into space, causing the “greenhouse effect”. rising temperatures could have killed off or reduced the activity of plankton, disrupting food chains and also disrupting the plankton’s normal role in converting carbon dioxide to oxygen through photosynthesis. It would have taken long for dinosaurs to become extinct.Dinosaurs may have also killed themselves. It is possible that they consumed poison from plants. The emergence of flowering plants could have poisoned them. These plants contained alkaloids. Smaller animals with lesser appetites could have survived the doses, but perhaps the dinosaur could not. Most mammals are smart enough to avoid these poison ness plants because of the bitter taste. The dinosaurs, however, may have not had the sense or the liver. They could not taste the bitterness or detoxify the ingested substances. This theory is not scientifically significant because there is no way of telling if the dinosaurs could taste, or how their digestive system worked.What if it wasn’t the dinosaurs that caused their own extinction, but something greater? Species of animals that have survived for millions of years have to be well adapted to their environment or they could not survive. Generally, the dinosaurs were successful creatures. They would have continued to survive as long as their environment remained unchanged. If the conditions had changed slowly, the dinosaurs might have had to adapt through ordinary evolutionary processes. Extinction occurs because of sudden change; the kind of change whose impact is so severe that the dinosaurs would be unable to adapt in a few generations.Some environmental crisis may have spelled disaster for the dinosaurs. It had to be so sweeping that it affected countless other forms, inc...
