Destructive human activity

The structure of ecosystems that existed for at least 66 million years will disappear because of man. The scientists found that the U-shaped curve of body size versus food type in terrestrial mammals has persisted for the past 66 million years and probably dates back to the time of the dinosaurs. The researchers also found that this pattern is shared by other vertebrates. Due to human activities, the U-shaped dependence can disappear, leading to serious environmental consequenc