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  1. Vor 15 Stunden · t. e. Renewable energy (or green energy, low-carbon energy) is energy from renewable natural resources that are replenished on a human timescale. Using renewable energy technologies helps with climate change mitigation, energy security, and also has some economic benefits. [1] Commonly used renewable energy types include solar energy, wind ...

  2. en.wikipedia.org › wiki › NiacinNiacin - Wikipedia

    Vor 15 Stunden · Niacin, also known as nicotinic acid, is an organic compound and a vitamer of vitamin B 3, an essential human nutrient. [3] It is produced by plants and animals from the amino acid tryptophan. [4] Niacin is obtained in the diet from a variety of whole and processed foods, with highest contents in fortified packaged foods, meat, poultry, red ...

    • C₆H₅NO₂
    • 123.111 g·mol−1
    • 237 °C; 458 °F; 510 K
    • 18 g L−1
  3. en.wikipedia.org › wiki › HummingbirdHummingbird - Wikipedia

    Vor 15 Stunden · Hummingbirds are birds native to the Americas and comprise the biological family Trochilidae. With approximately 366 species and 113 genera, [1] they occur from Alaska to Tierra del Fuego, but most species are found in Central and South America. [2] As of 2024, 21 hummingbird species are listed as endangered or critically endangered, with ...

  4. Vor 15 Stunden · e. Evidence of common descent of living organisms has been discovered by scientists researching in a variety of disciplines over many decades, demonstrating that all life on Earth comes from a single ancestor. This forms an important part of the evidence on which evolutionary theory rests, demonstrates that evolution does occur, and illustrates ...