CaribouThe Northern Migrationppt cemsscaribouthe北migraionppt 变量.pptVIP

CaribouThe Northern Migrationppt cemsscaribouthe北migraionppt 变量.ppt

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CaribouThe Northern Migrationppt cemsscaribouthe北migraionppt 变量

Introduction Recall the 3 climate zones of the earth (Polar, Temperate, Tropical) Draw a picture of the earth and its 3 climate zones Think of at least one animal that is native to each zone Write the name of this animal next to the zone Bare Necessities of Life All life needs water. How much water is in most cells? Most cells are around 70% water All life needs energy (food). All life needs air (plants need CO2 animals need O2) All life needs habitat (space) Caribou The Northern Migration – Gypsies of the North Climate Effects on Caribou Greenhouse gasses are having their most drastic effect near the poles Global warming trends have been observed at the polar regions of the planet, including the arctic Overview It has been hypothesized that increased levels of greenhouse gasses are causing climate changes in the arctic regions of North America. As a result of these global warming trends, the arctic summers have been becoming warmer and the winters colder. What are caribou? Caribou are related to deer Caribou are ungulates (hoofed animals) What are caribou? Caribou and Reindeer are the same species Rangifer tarandus Reindeer were domesticated thousands of years ago by humans and are used to pull sleds Where do caribou live? Caribou live in the Arctic circle Canada, Alaska, Scandinavia (reindeer) have caribou populations Idaho, Montana, and the Great Lake states once had caribou herds Where do caribou live? Caribou are, in most cases, constantly migrating in search of food Due to their constant migration, they require vast amounts of suitable habitat What do caribou eat? Caribou eat plants (herbivore) What type of organism eats other organisms (plants/animals)? Answer: Consumer What do caribou eat? During the warm months, such as summer, caribou eat grasses During the winter months when snow covers the ground, caribou eat lichens growing under the snow How is habitat/global change affecting caribou? Climatologists (scientists that study climate

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