Piping pseudokarst. The 2010 Guatemala City sinkhole formed suddenly in May of that year; torrential rains from Tropical Storm Agatha and a bad drainage system were blamed for its creation. It swallowed a three-story building and a house; it measured approximately 20 m (66 ft) wide and 30 m (98 ft) deep.
âFour legs good, two legs bad.â This phrase, which occurs in Chapter III, constitutes Snowballâs condensation of the Seven Commandments of Animalism, which themselves serve as abridgments of Old Majorâs stirring speech on the need for animal unity in the face of human oppression.
For example, when leg extensions are the agonist exercise, lying leg curls are a good antagonist exercise (since the hamstrings are antagonists to the quadriceps). It's not the best pairing, though, because leg extensions are performed while seated, and lying leg curls are performed while curls are a good substitute.