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- Red blood cell - Wikipedia
Women have about 4–5 million red blood cells per microliter (cubic millimeter) of blood and men about 5–6 million; people living at high altitudes with low oxygen tension will have more Red blood cells are thus much more common than the other blood particles: there are about 4,000–11,000 white blood cells and about 150,000–400,000
- New reptile shows dinosaurs and pterosaurs evolved among . . .
Dinosaurs and pterosaurs have remarkable diversity and disparity through most of the Mesozoic Era 1,2,3 Soon after their origins, these reptiles diversified into a number of long-lived lineages
- Penguin - Wikipedia
The smallest penguin species is the little blue penguin (Eudyptula minor), also known as the fairy penguin, which stands around 30–33 cm (12–13 in) tall and weighs 1 2–1 3 kg (2 6–2 9 lb) [7] Today, larger penguins generally inhabit colder regions, and smaller penguins inhabit regions with temperate or tropical climates
- How to Sustainably Feed 10 Billion People by 2050, in 21 . . .
There is a big shortfall between the amount of food we produce today and the amount needed to feed everyone in 2050 There will be nearly 10 billion people on Earth by 2050—about 3 billion more mouths to feed than there were in 2010 As incomes rise, people will increasingly consume more resource-intensive, animal-based foods
- Classification of Living Things - Windows to the Universe
Scientists have found and described approximately 1 75 million species on Earth Plus, new species are being discovered every day From tiny bacteria to yeasts to starfish to blue whales, life's diversity is truly impressive! With such a diversity of life on Earth, how does one go about making sense of it all?
- Invasive species cost the world $423 billion every year and . . .
Of 37,000 alien species known to have been introduced around the world, 3,500 are considered harmful and pose a “severe global threat” by destroying crops, wiping out native species, polluting
- Why havent all primates evolved into humans? | Live Science
Modern chimps have been around for longer than modern humans have (less than 1 million years compared to 300,000 for Homo sapiens, according to the most recent estimates), but we've been on
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