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heterogenesis    
n. 世代交替,异形生殖,自然发生

世代交替,异形生殖,自然发生

heterogenesis
n 1: the alternation of two or more different forms in the life
cycle of a plant or animal [synonym: {alternation of
generations}, {heterogenesis}, {xenogenesis}]


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  • Study Documents Dramatic New Impacts to Birds from Outdoor Cats
    The study estimated that the median number of birds killed by cats annually is 2 4 billion and the median number of mammals killed is 12 3 billion About 69 percent of the bird mortality from cat predation and 89 percent of the mammal mortality was from un-owned, or feral, cats
  • 14 Predators of Birds – What Animals Eat Birds?
    Your cute little cat may seem all good and innocent but cats are considered one of the leading predators for birds Studies suggest that domestic cats, feral cats, and stray cats kill over three billion wild birds every year And this number keeps growing, which has seen the relationship between bird keepers and cat lovers get rocky
  • Cats kill up to 270million prey every year, study suggests . . .
    Pet cats in Britain's suburbs may be killing up to 270 million animals per year, a study suggests Suburban cats living on the edge of natural areas kill an average of 34 animals each per year
  • Do Cats Eat Birds – Is It Safe What To Know! – FAQcats. com
    It is normal for cats to kill and eat birds Cats are natural predators that hunt to survive in the wild Our domesticated kitties have retained their hunting instinct, so it should not be surprising to see your cat kill and eat a bird In fact, according to research published in the Nature Communications Journal in 2013, cats in the United
  • Pet cats in Australia - Invasive Species Council
    Roaming pet cats kill over 500 million animals every year Australia's pet cats are some of our best companions, but they have a dark side Cat-lover or not, none of us can escape the devastating impacts feral and roaming cats are having on Australia’s wildlife
  • Why do I keep finding dead birds in my yard? - Birdful
    Additionally, clear windows are invisible barriers that birds do not see Estimates range from 100 million to 1 billion birds per year in the U S alone that die from striking windows Be on the lookout under windows and near doors for evidence of window collisions Predation Predators catch birds but cannot consume the entire body right away
  • How accurate is Warrior cats? by Mountainstorm – BlogClan
    Even though cats are much more vicious than foxes on the “killing scale” Cats can kill from 1 4 billion to as many as 3 7 billion birds each year, not including small mammals like mice, shrews, voles, and rabbits, which reach a whopping number of 6 9 billion to 20 7 billion





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