Now I have to reframe my diploma Bill Burr probably <| sep |> Sure ! I would call it jiggling my leg up and down fast . Seated , with your heels raised and the balls of your feet on the floor lift your heel up and down but not all the way to the floor . It looks like a nervous movement if someone were waiting for important news . I hope helps , it ' s hard to describe ! j i g g l i n g y o u r l e g s c l i e n t m s a n d r o i d v e r i z o n p r m d v i snsourcelnmstbmischsaXved 0 ahUKEwj 23 dW 8 n 8 PQAhVr 5 oMKHZbSBLUQAUICCgCbiw 360 bih 560 # imgrcTXaTTSBLlwNocM % 3 A <| sep |> Doesn ' t Symmetra ' s wall interrupt hack by blocking line of sight ? <| sep |> Just in case this was asked in earnest , apex predators like alligators , cougars , bears etc . are extremely important to ecosystems . They regulate the population of their prey , which have usually evolved to overproduce young to help compensate for this constant threat of predation . Remove the regulator at the top of the food chain and suddenly the prey population explodes , which has further effects downstream in the ecosystem due to the increased strain they put on their prey or other food source . This is called an ecosystem cascade and is generally why wildlife biologists prefer to keep things the way they are because once one thing is out of balance it can fuck with everything else in unpredictable ways . Edit Why is everyone ruthlessly downvoting the question ? It would be more productive to allow others with a similar view to see the error in that line of thinking .