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It is unlikely that any two snowflakes are alike due to the estimated 10 19 (10 quintillion) water molecules which make up a typical snowflake, [10] which grow at different rates and in different patterns depending on the changing temperature and humidity within the atmosphere that the snowflake falls through on its way to the ground. [11]
The hexagonal snowflake, a crystalline formation of ice, has intrigued people throughout history.This is a chronology of interest and research into snowflakes. Artists, philosophers, and scientists have wondered at their shape, recorded them by hand or in photographs, and attempted to recreate hexagonal snowflakes.
Arctic fox, a predator of smaller animals that live beneath the snow. Snow supports a wide variety of animals both on the surface and beneath. Many invertebrates thrive in snow, including spiders, wasps, beetles, snow scorpionflies and springtails. Such arthropods are typically active at temperatures down to −5 °C (23 °F). Invertebrates ...
Sleet and freezing rain occur by a similar process, but are different forms of precipitation. Both are most common in the winter. Sleet occurs when snowflakes melt into a raindrop in a wedge of ...
Snowflake was a western lowland gorilla with non-syndromic oculocutaneous albinism. [8] [9] [10] He had poor vision, though tests to determine whether he had a central blind spot did not find one. [11]
The Caldecott Medal winner in 1999 for the best-illustrated children's book was Snowflake Bentley, which remembers Bentley's life. [ 11 ] At the Fairbanks Museum and Planetarium , a noted meteorological observation center in St. Johnsbury, Vermont , there is an exhibit about atmospheric ice crystal formation featuring several of Bentley’s ...
Leucojum aestivum is a perennial bulbous plant, generally 35–60 cm (14–24 in) tall, but some forms reach 90 cm (35 in). Its leaves, which are well developed at the time of flowering, are strap-shaped, 5–20 mm (0.2–0.8 in) wide, reaching to about the same height as the flowers.
The earliest evidence for life on Earth includes: 3.8 billion-year-old biogenic hematite in a banded iron formation of the Nuvvuagittuq Greenstone Belt in Canada; [30] graphite in 3.7 billion-year-old metasedimentary rocks in western Greenland; [31] and microbial mat fossils in 3.48 billion-year-old sandstone in Western Australia.