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Vor 5 Tagen · An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth. Such an event is identified by a sharp fall in the diversity and abundance of multicellular organisms.
Vor einem Tag · The extinction event produced major changes in Paleogene insect communities. Many groups of ants were present in the Cretaceous, but in the Eocene ants became dominant and diverse, with larger colonies. Butterflies diversified as well, perhaps to take the place of leaf-eating insects wiped out by the extinction.
Vor 3 Tagen · Approximately 251.9 million years ago, the Permian–Triassic (P–T, P–Tr) extinction event (PTME; also known as the Late Permian extinction event, the Latest Permian extinction event, the End-Permian extinction event, and colloquially as the Great Dying) forms the boundary between the Permian and Triassic geologic periods, and ...
Vor 4 Tagen · Extinction of animals and plants. Read scientific research on the dinosaur extinction, future mass extinctions, and endangered species. What can be done?
Vor 4 Tagen · The extinction of LBF is likely triggered by the dropping of sea level and increased circulation. Geological data support these observations. Paleogene LBF diversified in the late Paleocene and peaked in the middle Eocene when temperatures were warm, and nutrient input to surface waters was limited. In the late Eocene, as cooling and nutrient input to surface waters increased, the extinction ...
Vor 2 Tagen · Darren Incorvaia visited Lord Howe Island stick insects at the San Diego Zoo while reporting this article. May 28, 2024. The feisty Lord Howe Island stick insect crawling on the gloved hand of ...
Vor 19 Stunden · Published May 30, 2024. Biologist Ian Souza-Cole stands with his back to a balmy, manure-scented north wind sweeping over California’s San Joaquin Valley. It’s early May, and he is on a large dairy farm near the town of Planada, staring intently across a field of triticale, a wheat-rye hybrid favored as feed for milk cows.
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