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The forests of Northern California are home to many animals, for instance the American black bear.There are between 25,000 and 35,000 black bears in the state. [6]The forests in northern parts of California have an abundant fauna, which includes for instance the black-tailed deer, black bear, gray fox, North American cougar, bobcat, and Roosevelt elk.
The alpine zone, or alpine fell-field, is above the tree line, generally at 11,000 to 11,500 feet (3,400 to 3,500 m) in the south, [4] [5]: 8 and 9,900 feet (3,000 m) [6]: 17 to 10,500 feet (3,200 m) [4] in the north. The plants are influenced by having to endure long and very cold winters, poor to no soils, constant high winds, intense ...
Because fifty hens per acre represents 800 square feet (74 m 2) per hen (80 m 2 per hen), while the density inside the house at the time was normally four square feet per hen (0.4 m 2 per hen), this required that the yard be 200 times wider than the house, assuming a yard on one side of the house. That is, a house 20 feet (6 m) wide required a ...
Herbivory is of extreme ecological importance and prevalence among insects.Perhaps one third (or 500,000) of all described species are herbivores. [4] Herbivorous insects are by far the most important animal pollinators, and constitute significant prey items for predatory animals, as well as acting as major parasites and predators of plants; parasitic species often induce the formation of galls.
The western and eastern Sierra Nevada have substantially different species of plants and animals, because the east lies in the rain shadow of the crest. The plants and animals in the east are thus adapted to much drier conditions. [4] The altitudes listed for the biotic zones are for the central Sierra Nevada.
The classification of living things into animals and plants is an ancient one. Aristotle (384–322 BC) classified animal species in his History of Animals, while his pupil Theophrastus (c. 371 –c. 287 BC) wrote a parallel work, the Historia Plantarum, on plants. [7]
Many different plant species live in the high-altitude environment. These include perennial grasses, sedges, forbs, cushion plants, mosses, and lichens. [81] High-altitude plants must adapt to the harsh conditions of their environment, which include low temperatures, dryness, ultraviolet radiation, and a short growing season.
Skeletons of a human and an elephant. Comparative foot morphology involves comparing the form of distal limb structures of a variety of terrestrial vertebrates.Understanding the role that the foot plays for each type of organism must take account of the differences in body type, foot shape, arrangement of structures, loading conditions and other variables.