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  • HIV and AIDS - World Health Organization (WHO)
    During this time, people are in the so-called “window period” when they have low levels of antibodies which cannot be detected by many rapid tests, but they may still transmit HIV to others People who have had a recent high-risk exposure and test negative can have a further test after 28 days
  • Current Shark and Ray Report - Fish
    Australia’s waters contain a rich and diverse range of chondrichthyan fishes—sharks, rays and chimaeras—at last count 331 species and increasing thanks to new scientific studies Of these, 183 are sharks, 134 are rays and the remaining 14 are chimaeras (ghost sharks)
  • Top 3 Sharks That Attack Humans - ThoughtCo
    White sharks (Carcharodon carcharias), also known as great white sharks, are the number one shark species that cause unprovoked shark attacks on humans These sharks are the species made infamous by the movie "Jaws " According to the International Shark Attack File, white sharks were responsible for 314 unprovoked shark attacks from 1580–2015
  • Sharks Are 450 Million Years Old, Meaning They Were Here . . .
    In the ~450 million years they’ve had to get settled, sharks have revealed some pretty unusual behaviors In 2022, footage captured a shark strolling around on land like it was no big deal
  • Cows Kill More People Than Sharks - Discovery
    There are approximately five deaths caused by sharks annually, while horses kill about 20 people a year and cows kill about 22 Crocodiles gobble up 1,000 people a year By spreading malaria, mosquitos kill hundreds of thousands more people than sharks do every year Deer also cause hundreds of deaths, mostly by running out in front of cars
  • Why Do Sharks Attack? | Britannica
    In the case of great white sharks, which, along with bull and tiger sharks, are the largest and most dangerous species known to attack humans, there is compelling evidence from survivors of attacks suggesting that the sharks may simply have been investigating what they considered to be foreign objects in the water Certainly, most attacks have
  • 400 Million Years of Shark Evolution - ThoughtCo
    The First Sharks We don't have much in the way of direct evidence, except for a handful of fossilized scales, but the first sharks are believed to have evolved during the Ordovician period, about 420 million years ago (to put this into perspective, the first tetrapods didn't crawl up out of the sea until 400 million years ago) The most





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