
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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MAKE CONNECTIONS There are vast stores of organic
matter in the soils of northern coniferous forests and
tundra around the world. Suggest an explanation for
why scientists who study global warming are closely
monitoring these stores (see Figure 55.14).
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- The mountain pine beetle inhabits western North America, where it feeds on the inner bark of pine trees. In recent years, the beetles expanded hundreds of km north, because winters are warmer. Their eggs are kill ed by extreme cold events, which no longer occur Rising temperatures have also stressed the trees, making them more vulnerable to mountain pine beetle mortality. The mortality trees is now so extensive that the forests are projected to become a net carbon source instead of a carbon sink, releasing 200 megatons of carbon per year by the year 2020. The response of mountain pine beetles to warmer temperatures can be described as: () acclimation adaptation O radiative forcing range shift phenological shiftarrow_forwardplease draw! Create a model which accurately, in detail, depicts the potential pathways of carbon (biomass) and energy in an ecosystem with at least five trophic levels (don’t forget your decomposers, they can count as one trophic level). Make sure to incorporate the multiple pathways that biomass and energy could take at each trophic level. Lastly, clearly illustrate how carbon and energy flow in this ecosystem. Be sure to include adequate levels of detail for all pathways and differentiate the flow of carbon and energy in your model.arrow_forwardTundra Enlarge Image Taiga A biome is large regional area of similar communities characterized by a dominant plant type and vegetative structure. Traditionally, biomes have been used to describe large geographical regions such as deserts, grasslands, forests, and tundras. The tundra occurs between the taiga and the permanently frozen polar regions while the taiga zone occupies a wide belt between the tundra and the temperate forests on the American and Eurasian continents. The plant and animal populations vary in these two biomes. H Q Search 1) Review the images of the two biomes, the tundra and the taiga. Notice that while there are about 1,700 kinds of plants there are virtually no tree species in the tundra. What are the limiting factors in preventing the immigration of tree species into the tundra? All BUT ONE could apply. -)) A) rocky, poor soil B) very short growing season C) the presence of permafrost D) winters are six months long 2) The taiga is the most extensive biome,…arrow_forward
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