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  • Wildlife of the Tropical Rainforests - Teachers (U. S . . .
    Rainforests are home to half of all the living animal and plant species on the planet Two-thirds of all flowering plants can be found in rainforests A single hectare of rainforest may contain 42,000 different species of insect, up to 807 trees of 313 species and 1,500 species of higher plants
  • Tiger | Species | WWF - World Wildlife Fund
    The largest of all the Asian big cats, tigers rely primarily on sight and sound rather than smell for hunting They typically hunt alone and stalk prey A tiger can consume more than 80 pounds of meat at one time On average, tigers give birth to two to four cubs every two years
  • Are We Any Closer to Knowing How Many Species There Are on Earth?
    Caley and his co-authors looked at published estimates of the total number of species in the world as well as reckonings of the number of terrestrial insects, terrestrial arthropods, marine
  • Ocean - Wikipedia
    Marine waters cover more than 70% of the surface of the Earth and account for more than 97% of Earth's water supply [167] [168] and 90% of habitable space on Earth [169] Seawater has an average salinity of 35 parts per thousand of water Actual salinity varies among different marine ecosystems [170]
  • 8. 7 Million: A New Estimate for All the Complex Species on Earth
    The kingdom Animalia, for instance, hosts 32 recorded phyla, 90 classes, 493 orders, 5404 families, and 94,240 genera Extending that growth curve out, Worm and his colleagues predicted there should exist some 7,770,000 animal species—even though taxonomists have identified only about 950,000 so far
  • Bear - Wikipedia
    A Cephalogale-like species gave rise to the genus Ursavus during the early Oligocene (30–28 Mya); this genus proliferated into many species in Asia and is ancestral to all living bears Species of Ursavus subsequently entered North America, together with Amphicynodon and Cephalogale , during the early Miocene (21–18 Mya)
  • Monarch Butterfly - National Wildlife Federation
    Conservation The monarch population has declined by approximately 90 percent since the 1990s Monarchs face habitat loss and fragmentation in the United States and Mexico For example, over 90 percent of the grassland ecosystems along the eastern monarch’s central migratory flyway corridor have been lost, converted to intensive agriculture or urban developme





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