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  • 1. Biodiversity: What is it, where is it, and why is it . . .
    The estimated magnitude of background rates of extinction is roughly 0 1–1 0 extinctions per million species per year Most measurements of this rate have come from assessing the length of species’ lifetimes through the fossil record: these range over 0 5–13 million years, and possibly 0 2–16 million years
  • World Population by Year - Worldometer
    Population growth through history from 5000 BC to the current year (2025) for the entire population of the world
  • The Worlds 10 Oldest Living Trees - Treehugger
    Chao Yen Flickr CC BY-ND 2 0 Until 2013, Methuselah, an ancient bristlecone pine was the oldest known non-clonal organism on Earth Methuselah was 4,789 years old when examined in 1957, with
  • Alligator - Wikipedia
    The two extant species are the American alligator (A mississippiensis) and the Chinese alligator (A sinensis) Additionally, several extinct species of alligator are known from fossil remains Alligators first appeared during the late Eocene epoch about 37 million years ago [1]
  • Undiscovered bird extinctions obscure the true magnitude of . . .
    A recent study estimated an effective (i e , accounting for the accumulating extinction debt) extinction rate of 2 17 × 10 −4 species year for the present day 13; compared to our maximum rate
  • Population Ecology | Biology for Majors II - Lumen Learning
    Population Demography Populations are dynamic entities Populations consist all of the species living within a specific area, and populations fluctuate based on a number of factors: seasonal and yearly changes in the environment, natural disasters such as forest fires and volcanic eruptions, and competition for resources between and within species
  • Blue carbon as a natural climate solution | Nature Reviews . . .
    Potential BCE restoration has been estimated in the range of 0 2–3 2 million ha for tidal marshes, 8 3–25 4 million ha for seagrasses and 9–13 million ha for mangroves, which could draw down





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