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The savannah hypothesis (or savanna hypothesis) is a hypothesis that human bipedalism evolved as a direct result of human ancestors' transition from an arboreal lifestyle to one on the savannas. According to the hypothesis, hominins left the woodlands that had previously been their natural habitat millions of years ago and adapted to their new ...
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) biome and ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses.
The savannah is teeming with wildlife, including a large variety of bird species. The savannah is also home to the jaguar as well as the Harpy Eagle , the world's most powerful bird of prey , an extremely rare and endangered species which once ranged the forests of South America and is found in the Rupununi/Kanuku mountain range.
The following outline is provided as an overview of and topical guide to zoology: . Zoology – study of animals.Zoology, or "animal biology", is the branch of biology that relates to the animal kingdom, including the identification, structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems.
Test your knowledge on all things zoology with these animal trivia questions about cats, dogs, fish, zoo animals and insects perfect for kids and adults. 100 animal trivia questions that will make ...
In practice these are metazoan animals that can pass unharmed through a 0.5–1 mm mesh but will be retained by a 30–45 μm mesh, [5] but the exact dimensions will vary from researcher to researcher. Whether an organism passes through a 1 mm mesh also depends upon whether it is alive or dead at the time of sorting.
Mammals living in the African savannah are far more afraid of hearing a human voice than a lion’s growl, according to a new study that may lead to better strategies to steer animals away from ...
The Savannah sparrow (Passerculus sandwichensis) is a small New World sparrow that is the only member of the genus Passerculus. It is a widespread and abundant species that occupies open grassland habitats in North America.