Land Biomes. Biome- geographic areas that have similar climates and ecosystems.
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Transcript of Land Biomes. Biome- geographic areas that have similar climates and ecosystems.
![Page 1: Land Biomes. Biome- geographic areas that have similar climates and ecosystems.](https://reader031.fdocuments.in/reader031/viewer/2022012916/56649f165503460f94c2c608/html5/thumbnails/1.jpg)
Land Biomes
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Land Biomes
Biome- geographic areas that have similar climates and ecosystems
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Land BiomesThe 6 most common biomes are:
• Tundra• Taiga• Temperate Deciduous Forest• Tropical Rain Forest• Grassland • Desert
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Land Biomes
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TundraFound in parts of Canada, Alaska, and Siberia
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Tundra – “The Cold Desert”
• Found at latitudes around the North Pole
• Less than 25 cm precipitation yearly
• Very cold year round (-40ºC in winter)
• Cold, dry, treeless region
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Tundra –“The Land of the
Midnight Sun”
• Winter lasts 6 to 9 months with no daylight
• Summer is short and cold with 24 hours of sunlight a day
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Tundra-
• Soil is poor
• Permafrost–Layer of permanently frozen soil
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Plants of the Tundra
Tundra plants are resistant to drought and cold
Examples:• Reindeer moss (a lichen!)• Lichens• True mosses• Grasses• Small shrubs and flowers
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Plants of the Tundra• Reindeer moss – It’s a lichen!
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Plants of the Tundra• Lichens
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Plants of the Tundra• Lichen
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Plants of the Tundra
• True Mosses
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Plants of the Tundra
• Small shrubs and flowers
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Plants of the Tundra
• Small shrubs and flowers
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Plants of the Tundra
• Small shrubs and flowers
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Plants of the Tundra
• Grasses
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Animals of the Tundra
Many animals of the tundra migrate there during the short summer
Examples:• Biting insects• Snowy owls• Arctic hares
•Caribou•Musk oxen•Lemmings
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Animals of the Tundra• Biting insects
Mosquito Blackfly
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Animals of the Tundra• Snowy owl
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Animals of the Tundra• Arctic hare
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Animals of the Tundra• Caribou – “Reindeer”
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Animals of the Tundra
• Musk oxen
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Animals of the Tundra
• Lemmings
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Animals of the Tundra
• Lemmings
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Taiga or Coniferous ForestFound in parts of Canada, Alaska, and Russia
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Taiga or Coniferous Forest
• World’s largest land biome
• Latitudes between 50ºN and 60ºN
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Taiga-
• Warmer and wetter than the Tundra
• Winters are long and cold
• 35 to 40 cm of precipitation yearly (mostly snow)
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Plants of the Taiga
There is no permafrost, so trees can grow. Mosses and lichens grow on the forest floor.
Examples:• Cone-bearing Evergreen trees
– Firs– Spruces– Pines
–Hemlocks –Cedars
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Plants of the Taiga• Fir tree
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Plants of the Taiga• Spruce tree
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Plants of the Taiga• Hemlock tree
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Plants of the Taiga• Liverwort (a moss)
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Plants of the Taiga• Mosses
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Animals of the Taiga
Many animals live in the Taiga.
Examples:• Moose• Black Bear• Lynx• Wolves
•Badgers•Wolverines•Ermines •Deer
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Animals of the Taiga• Moose
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Animals of the Taiga• Black bear
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Animals of the Taiga• Lynx
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Animals of the Taiga• Wolf
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Animals of the Taiga• Badger
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Animals of the Taiga• Wolverine
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Temperate Deciduous Forest
Found in Europe, the eastern part of the U.S.A., and China
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Temperate Deciduous Forest
• Found below 50ºN latitude
• 75 to 150 cm precipitation yearly
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Temperate Deciduous Forest
• Wide range of temperatures with 4 seasons
• Below freezing in winter to 30ºC in summer
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Temperate Deciduous Forest
• Soil is rich in nutrients from layers of decomposing leaves
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Temperate Deciduous Forest
• Layers of vegetation– Canopy– Understory– Forest floor
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Layers of Vegetation
Canopy- tree tops that shade the ground below
Understory- shrub layer
Forest floor- dark and moist layer of dead leaves, twigs, and seeds
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Layers of Vegetation
Canopy
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Layers of Vegetation
Understory
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Layers of Vegetation
Forest floor
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Life in the Temperate Deciduous Forest
The mild climate and rich soil of the temperate deciduous forest supports a wide variety of plant and animal life.
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Plants of the Temperate Deciduous Forest
Plant life is abundant.
Examples:
•Oak trees
•Hickory trees
•Maple trees
•Shrubs
•Wildflowers
•Ferns
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Plants of the Temperate Deciduous Forest
•Oak tree
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Plants of the Temperate Deciduous Forest
•Hickory tree
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Plants of the Temperate Deciduous Forest
•Maple tree
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Plants of the Temperate Deciduous Forest
•Shrubs (Azalea)
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Plants of the Temperate Deciduous Forest
•Shrubs (Holly)
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Plants of the Temperate Deciduous Forest
•Wildflowers
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Plants of the Temperate Deciduous Forest
•Wildflowers
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Plants of the Temperate Deciduous Forest
•Ferns
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Animals of the Temperate Deciduous Forest
Animal life is diverse.
Examples:
•Deer
•Foxes
•Snakes
•Bears
•Birds
•Raccoons
•Amphibians
•Small mammals
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Animals of the Temperate Deciduous Forest
•Deer
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Animals of the Temperate Deciduous Forest
•Fox
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Animals of the Temperate Deciduous Forest
•Snakes (Eastern Garter Snake)
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Animals of the Temperate Deciduous Forest
•Snakes (Copperhead)
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Animals of the Temperate Deciduous Forest
•Black bear
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Animals of the Temperate Deciduous Forest
•Birds (Bald Eagle)
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Animals of the Temperate Deciduous Forest
•Birds
(Barn Owl)
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Animals of the Temperate Deciduous Forest
•Birds
WoodpeckerCardinal
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Animals of the Temperate Deciduous Forest
•Raccoon
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Animals of the Temperate Deciduous Forest
•Amphibians
Wood frog Leopard Frog
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Animals of the Temperate Deciduous Forest
•Amphibians
Spotted Salamander Jefferson Salamander
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Animals of the Temperate Deciduous Forest
•Small Mammals
Field Mouse Squirrel
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Tropical Rain ForestFound near the equator in Africa, South America, Australia, and the Pacific Islands
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Tropical Rain Forest
• Found near the equator
• 200 to 225 cm precipitation yearly
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Tropical Rain Forest
• Hot and humid all year
• Temperatures are fairly constant around 25ºC
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Tropical Rain Forest
• Soil is nutrient poor and acidic
• Most plants have shallow roots
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Tropical Rain Forest Layers of Vegetation
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Life in the Tropical Rain Forest
The tropical rain forest is a lush, productive ecosystem containing more than half of all the species that live on Earth.
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Plants of the Tropical Rain Forest
A rain forest may contain more than 700 species of trees and over 1000 species of flowering plants.
Examples:
•Mahogany trees
•Bromeliads and orchids
•Giant ferns
•Many flowering plants
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Plants of the Tropical Rain Forest
•Mahogany tree
Notice how the roots rise above the ground to help support this giant tree!
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Plants of the Tropical Rain Forest
•Bromeliads
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Plants of the Tropical Rain Forest
•Orchids
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Plants of the Tropical Rain Forest
•Giant ferns
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Plants of the Tropical Rain Forest
•Flowering plants
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Animals of the Tropical Rain Forest
The rain forest is home to a huge number of animals.
Examples:
•Monkeys
•Exotic birds
•Snakes
•Sloths
•Bats
•Insects
•Large cats
•Exotic mammals
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Animals of the Tropical Rain Forest
•Monkeys
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Animals of the Tropical Rain Forest
•Exotic birds
Toucan Parrots
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Animals of the Tropical Rain Forest
•Exotic birds
Cockatoo Hummingbird
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Animals of the Tropical Rain Forest
•Snakes (Anaconda)
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Animals of the Tropical Rain Forest
•Snakes
Albino Ball Python Green Mamba
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Animals of the Tropical Rain Forest
•Sloths
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Animals of the Tropical Rain Forest
•Bat (Fruit bat)
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Animals of the Tropical Rain Forest
•Insects
Butterfly Beetle
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Animals of the Tropical Rain Forest
•Large Cats (Jaguar)
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Animals of the Tropical Rain Forest
•Large Cats (Sumatran Tiger)
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Animals of the Tropical Rain Forest
•Large Cat (Ocelot)
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Animals of the Tropical Rain Forest
•Exotic mammals
Paca Peccary
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Animals of the Tropical Rain Forest
•Exotic mammals
Agouti Nutria
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Grassland“The Bread Basket of the World”
Found on every continent.
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GrasslandGrasslands are known by many names.
U.S.A. – Prairie or Plains
•Asia – Steppe
•South America – Pampas
•Africa –Veldt or Savanna
•Australia - Savanna
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Grassland
• Wet seasons followed by a season of drought
• 25 to 75 cm precipitation yearly
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Grassland Temperatures
Temperate grassland:
• 0-25oC (30-85oF)
• Tropical grassland:
• Mostly about 15-25oC(50-85oF)
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Grassland
• The soil is rich and fertile.
• The grass has extensive root systems, called sod.
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Plants of the Grassland
Grassland regions of the world are important farming areas. Cereal and grains grow here.
Examples:
•Wheat
•Rye
•Barley
•Corn
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Plants of the Grassland
•Wheat
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Plants of the Grassland
•Rye
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Plants of the Grassland
•Barley
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Plants of the Grassland
•Corn
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Animals of the Grassland
The most noticeable animals in grassland ecosystems are usually grazing mammals.
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Animals of the American Grassland
•Bison
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Animals of the American Grassland
•Prairie Dog
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Animals of the American Grassland
•Pronghorn
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Animals of the American Grassland
•Coyote
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Animals of the African Grassland
•Gazelle
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Animals of the African Grassland
•Wildebeest
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Animals of the African Grassland
•Lion
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Animals of the African Grassland
•Elephant
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Animals of the African Grassland
•Giraffe
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Animals of the Australian GrasslandAustralian grassland animals are marsupials
•Kangaroo
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Animals of the Australian Grassland
•Long Nosed Bandicoot
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Animals of the Australian Grassland
•Wallaby
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Animals of the Australian Grassland
•Wombat
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DesertFound on every continent.
The driest biome on Earth
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Desert
• Extreme temperatures- Very hot during the day and cool at night
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Desert
• Very little rainfall
• Less than25 cm precipitation yearly
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Desert
• The soil ranges from gravel to sand.
• Soil is nutrient poor.
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Plants of the Desert
Desert plants have evolved adaptations to help them survive in the extreme temperatures and dryness of this biome.
Examples:
•Cactus
•Mesquite
•Joshua trees
•Wildflowers
•Creosote
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Plants of the Desert•Cactus
Saguaro Prickly Pear
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Plants of the Desert
•Mesquite
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Plants of the Desert
•Joshua tree
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Plants of the Desert
•Wildflowers
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Plants of the Desert
•Creosote
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Animals of the Desert
The animals of the desert are adapted to the hot temperatures.
Examples:
•Lizards
•Camels
•Snakes
•Scorpions
•Kangaroo rat
•Gila Monster
•Predatory birds
•Tarantula
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Animals of the Desert
•Lizards
Desert Iguana Frilled Lizard
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Animals of the Desert
•Camel
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Animals of the Desert
•Snakes
Diamondback Rattlesnake Sidewinder
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Animals of the Desert
•Scorpion
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Animals of the Desert
•Kangaroo rat
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Animals of the Desert
•Gila Monster
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Animals of the Desert
•Predatory birds
Great Horned Owl Kestrel
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Animals of the Desert
•Tarantula