Read the text "Space objects 'linked' to rise of mammals" and answer the question. Give short answers in no more than 2 words."Space objects 'linked to the rise of mammals"Space impacts have had profound effects on Earth's ecosystems. For example, an asteroid which slammed intoMexico's Yucatan Peninsula 66 million years ago was responsible for disappearing dinosaurs. The violent collisioncaused fires, earthquakes and powerful tsunamis. According to geologists, clouds of dust and gas could causeglobal cooling on Earth for several years, which made dinosaurs' disappearance faster. After the asteroid slamthe planet became essentially ice-free, with sea levels that were dramatically higher than now. Many small ocean-bottom creatures became extinct.A comet impact 55 million years ago may have helped mammals dominate the Earth. It could have activated aquick phase of global warming linked to the growth of mammals. Released gases warmed the planet very quickly55.6 million years ago. This spike in temperature is closely connected with growth of mammal groups in newparts of the world. These mammals are divided into three groups that are still with us today. These three groupsare the Artiodactyla, the Perissodactyla and the Primates - the mammalian order that includes humans. ModernArtiodactyls include sheep, pigs, camels and giraffes, while today's Perissodactyls include horses, tapirs, rhinosand zebras. Scientists didn't completely understand how these mammals were divided.All the information given so far is not conclusive, there is a lot of data to be investigated. Scientists' interpretationremains controversial with other experts.What is responsible for disappearing dinosaurs?
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Alexander Sergeyevich Pushkin - Russia's greatest poet. He wrotemany beautiful lyrical poems, plays in verse and prose, short stories. Some of his works have inspired composers to createoperas and ballets. The poet was born in Moscow. One of theancestors of his father was a black Abyssinian, the court of Tsar Peter the Great. Alexander began writing poetry at age 12. He was educated at the Tsarskoye Selo Lyceum. After his graduation he entered the civil service. Once a poet has written several poems that criticized important government officials, he was exiled in 1920to the south of Russia. In 1826 Nicholas I summoned from exilePushkin. Since then the writer has become a recognized poet in Russia. All my life doing historical research Pushkin and used themto create their own literary works. In 1836 he became the founder of the literary magazine called "contemporary."
In 1831, Alexander married. His fiancee - Natalia Goncharova - was a famous beauty, she had many admirers, to whom Pushkin was jealous of her. He resented courting French - Baron Georges d'Anthes, and challenged him to a duel. The poet in a duel, was mortally wounded. He died two days later in his apartment on the Moika.