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  2. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    Air pollution can cause diseases, allergies, and even death; it can also cause harm to animals and crops and damage the natural environment (for example, climate change, ozone depletion or habitat degradation) or built environment (for example, acid rain). [3] Air pollution can occur naturally or be caused by human activities. [4]

  3. Ecotoxicity - Wikipedia

    en.wikipedia.org/wiki/Ecotoxicity

    Pesticides are released into the natural environment intentionally by people who are often unaware that these chemicals will travel further than anticipated, Hatakeyama et al. as cited in. [6] Thus, pesticides largely affect the natural communities in which they are used. They negatively affect multiple levels, ranging from molecules, to ...

  4. Bioaccumulation - Wikipedia

    en.wikipedia.org/wiki/Bioaccumulation

    Some animal species use bioaccumulation as a mode of defense: by consuming toxic plants or animal prey, an animal may accumulate the toxin, which then presents a deterrent to a potential predator. One example is the tobacco hornworm, which concentrates nicotine to a toxic level in its body as it consumes tobacco plants. Poisoning of small ...

  5. List of deadliest animals to humans - Wikipedia

    en.wikipedia.org/wiki/List_of_deadliest_animals...

    The Deadliest Animal in the World, Gates Notes; These Are The Top 15 Deadliest Animals on Earth, Science Alert; Top 10 Deadliest Animals To Humans In The World, Toptenia; The 25 Most Dangerous Animals In The World, List 25; The Most Dangerous Animals in the World, Animal Danger; Top 10 Most Dangerous Animals In The World, Conservation Institute

  6. List of highly toxic gases - Wikipedia

    en.wikipedia.org/wiki/List_of_highly_toxic_gases

    Toxic: a chemical that has a median lethal concentration (LC 50) in air of more than 200 parts per million (ppm) but not more than 2,000 parts per million by volume of gas or vapor, or more than 2 milligrams per liter but not more than 20 milligrams per liter of mist, fume or dust, when administered by continuous inhalation for 1 hour (or less if death occurs within 1 hour) to albino rats ...

  7. Do humans need to hibernate, too? What the research shows - AOL

    www.aol.com/news/humans-hibernate-too-research...

    Humans still don’t need to hibernate, Weiss said, nor can we afford to due to our social and occupational obligations. “But we can make adjustments to perform in a better way, to rest in a ...

  8. Environmental toxicology - Wikipedia

    en.wikipedia.org/wiki/Environmental_toxicology

    In humans, arsenic can cause cancer in the bladder, skin, lungs and liver. One of the major sources of arsenic exposure in humans is contaminated water, which is a problem in more than 30 countries in the world. Humans tend to encounter arsenic by "natural means, industrial source, or from unintended sources."

  9. Dogs don't actually age 7 times faster than humans, new study ...

    www.aol.com/lifestyle/dogs-dont-actually-age-7...

    Say you have a 4-year-old Labrador named Comet — with the new equation, Comet's real "dog age" would be slightly older than 53. The reason for the difference is actually pretty simple.