explore the putative hyperdiversity of tropical leaf endophytes‚ we compared endophyte communities along a broad latitudinal gradient from the Canadian arctic to the lowland tropical forest of central Panama. Here‚ we use molecular sequence data from 1403 endophyte strains to show that endophytes increase in incidence‚ diversity‚ and host breadth from arctic to tropical sites. Endophyte communities from higher latitudes are characterized by relatively few species from many different classes of Ascomycota
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and brown bear specifically are closely related. In fact‚ there are estimates that polar bears branched off from brown bears during the mid to late Pleistocene‚ becoming isolated on Siberian costal enclaves‚ an Arctic sea ice environment. (C. Lindqvist
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1. Natural causes of climate change within the model are livestock (cows) producing methane gas. Human-made causes that can be seen are deforestation for crops‚ homes‚ and businesses. Pollution from cars and planes realeases CO2 into the air and the use of electricty to run the homes and businesses creates greenhouse gases. From 1775 till today‚ cars and planes have been created and contribute to green house gas production. The population has increase and more crops and homes have been built. Oil
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Environmental Protection Agency Biodiversity is the variability among living organisms from all sources‚ including inter alia [among other things]‚ terrestrial‚ marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species‚ between species and of ecosystems. Therefore‚ biodiversity is the connection among all living things on the planet‚ including their habitats and their interaction in the environment and all the living things on the
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the Yentna River. This National Park‚ located at the center of the Alaskan Range‚ sees on average a 70°F high and a -9°F low every year. The Park has a wide variety of different types of ecosystems and biological communities ranging from high‚ mountainous terrains to low land forest and vast stretches of tundra. The winters are often long and the spring and summer seasons are short lived for the most part. The weather in Denali is almost unpredictable‚ so unpredictable that there have been cases
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things contribute to global warming. The causes can be split into two groups: 1. Natural causes. 2. Man-made or anthropogenic causes. 1. Natural causes: Natural causes are causes created by nature. The release of methane gas from arctic tundra and wetlands is one such natural cause. Methane‚ being a greenhouse gas‚ traps heat in the Earth’s atmosphere resulting in global
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east from Japan to the Southeast Arabian Peninsula‚ which is more than 8500 kilometers away. It is interesting to see the geographical composition of Asia. It encompasses the entire climate and expanse‚ be it the equatorial rain forest or the arctic tundra. We also get to see the highest and the lowest points of the Earth’s surface in Asia. The highest being‚ Mount Everest (8‚848 meters) and the lowest is the shore of the Dead Sea (397 meters below sea level). AFRICA Africa is the second largest
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The Alaska Marmot are classified as rodents who live in cold climates in mountain regions. They have very distinctive features that make them different from other marmots. As rodents they have pointed‚ sharp teeth used for eating. In regards to there appearance‚ they have black or brown fur that tends to extend from the very top portion of their head to the top of their nose. Eyes are round‚ in shape and small. It also has five curved limbs that are used to improve their digging(Wilson and Ruff
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Geography Study Notes for Exam Landforms * Formation of Canada * Step 1: hot volcanoes were located where the North American Canadian area is located. * Step 2: erosion eroded away the tops of the volcanoes making them shorter * Step 3: more erosion literally combined the volcanoes into one mass of rocky land * Step 4: the mass of land is now a hard smooth plate‚ the Canadian Shield * Step 5: the Atlantic plate crashed into the east side of Canada and the area
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tusks or tooth atop of the upper lip which is eight and a half feet long for males. Narwhal’s eat fish‚ shrimp‚ and squid. Since they eat those specific foods there isn’t an overload in the species. Since there is no overload we can have the same ecosystem which means we can have a balanced number of fish. Which helps us so that we can fish correctly. People also use narwhals
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