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- Describe what the community structure might look like one year after the eruption and today.
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- The _______________ is open ocean from the shoreline to a depth of 200 m. (a) benthic environment (b) intertidal zone (c) neritic province (d) oceanic province (e) aphotic regionDQuestion 1 Cuvier was known for introducing the world view of Catastrophism. Explain this world view. Ois the idea that land forms were created by the same processes that occur today-mountain building processes, erosion, and deposition. These slow processes occur continually, and over long periods of time, their effects build mountain ranges and carve out canyons. No catastrophes are needed to explain the Earth's landforms - no special violent actions, just the constant action of the normal, slow processes of erosion and untain-building. O This is the idea that the world was shaped by tremendous, violent catastrophic events unlike anything humans have ever experienced. Landforms - such as mountains and canyons - were formed by catastrophes - and the biological world also reflects the influence of catastrophic events. Whole communities of ancient animals went extinct because of violent catastrophes, and then they were replaced by entirely new communities.Explain how the three major types of deserts differin their climate and vegetation. Why are desert ecosystems vulnerable to long-term damage? How dodesert plants and animals survive? Explain how thethree major types of grasslands differ in their climateand vegetation. What is a savanna? Explain howsavanna animals survive seasonal variations in rainfall (Core Case Study). Why is the elephant an important component of the African savanna? DescribeTuy Sereivathana’s efforts to prevent elephants frombecoming extinct in Cambodia. Why have manyof the world’s temperate grasslands disappeared?Describe Arctic tundra and define permafrost?Explain how the three major types of forests differin their climate and vegetation. Why is biodiversityso high in tropical rain forests? Why do most soils intropical rain forests hold few plant nutrients. Whydo temperate deciduous forests typically have a thicklayer of decaying litter? What are coastal coniferousor temperate rain forests? How do most species…
- Pond successionA: Emergent plant life grows at the edges where sunlight permeates.B: Sediment begins to accumulate as plants decay.C: Emergent plants grow inwards, sediment accretes. D: Emergent and terrestrial plants fill the pond throughout.E: Sediment fully fills the pond, terrestrial plants take over .F: Trees grow and the pond becomes the forest. Scene A Scene B Scene C Scene D Scene E Scene FThe Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and etreat, with the abrupt end of the last ice age about 7,000 years ago marking the beginning of the modern climate era and of human vilization. Most of these climate changes are attributed to very small variations in Earth's orbit that change the amount of solar energy ur planet receives. The current warming trend is of particular significance because most of it is very likely human-induced and oceeding at a very rapid rate not seen in the past 1,300 years. Earth-orbiting satellites and other technological advances have enabled Fentists to see the big picture, collecting many different types of information about our planet and its climate on a global scale. {thing! Warming oceans Carbon dioxide levels continue to rise. The Greenland and Antarctic ice sheets have decreased in mass. Desertification has increased due to the rapid evaporation of freshwater…SCIENCE, TECHNOLOGY, AND SOCIETY In many countries,irrigation is depleting aquifers to such an extent that landis subsiding, harvests are decreasing, and it is becomingnecessary to drill wells deeper. In many cases, the withdrawalof groundwater has now greatly surpassed the aquifers’ ratesof natural recharge. Discuss the possible consequences of thistrend. What can society and science do to help alleviate thisgrowing problem?
- Stream orders 1 and 2 are generally shaded by tree canopy overhanging the streams. If you cleared the trees light will reach the stream. Why don't we see phytoplankton colonizing this site?Recent research has suggested that globalwarming is contributing to the increased fre-quency and severity of El Niño events. Thiscan cause severe drought in India andAfrica, as well as greatly reduce fish catch inparts of the Southern Hemisphere. Shouldthe responsibility for decreasing greenhousegas emissions be greater for more-developedcountries (MDCs) because they produce agreater amount of greenhouse gases percapita than less-developed countries(LDCs), even though El Niños have moresevere consequences for LDCs? Aside from the recent increases in gasolineprices, would you consider buying a morefuel-efficient car or spend more on planeflights to purchase "carbon credits" to doyour part in decreasing the emission ofgreenhouse gases such as carbon dioxide?Why or why not?The U.S. Department of the Interior filed an environmental impact statement (EIS) with regard to its proposal to lease approximately eighty tracts of submerged land, primarily located off the coast of Louisiana, for oil and gas exploration. Adjacent to the proposed area is the greatest estuarine coastal marsh in the United States. This marsh provides rich nutrients for the Gulf of Mexico, the most productive fishing region of the country.The EIS focused primarily on oil pollution and its negative environmental effect. Three conservation groups contend that the EIS is insufficient in that it does not properly discuss alternatives. The government contends that (a) it need only provide a detailed statement of the alternatives, not a discussion of their environmental impact, and (b) the only alternatives the NEPA requires it to discuss are those which can be adopted and implemented by the agency issuing the impact statement. Is the government correct in its contentions? Why?
- D. The rock eventually disappeared _5. How can phosphate deposits on sedimentary rock unde ocean get to cycle again? A. Through weathering B. Through assimilation C. Through decomposition D. Through geologic uplifting Post test! DIRECTIONS: Write the letter of the correct answer on the blank. _1. All of the ff, are ways to bring nitrogen back into the soil except: C. Denitrification D. Precipitation A. Animal wastes 5/12 B. Decomposition 2. What form of sulfur reacts with water to form acid rain? A. Sulfur trioxide C. Sulfur gas B. Sulfuric acid D. Hydrogen sulfide 3. All of the ff. are activities that add sulfur to the atmosphere except: C. Volcanic activities D. Decomposition A. Combustion of fossil fuels B. Photosynthesis 4. Why does nitrogen gas needed "fixation"? A. Nitrogen gas needs to be broken down into simpler forms B. Animals cannot breathe in nitrogen gas, it needed to be fixed first. C. Nitrogen gas is a flammable gas. Fixation is needed to avoid ignition D. Plants cannot…Some Aleutian Islands are surrounded by urchin barrens while others are surrounded by kelp forests. Which statement gives the primary explanation for these differences? O The kelp forest islands experience a substantially warmer climate than do the urchin barren islands. Grazing by urchins prevents the formation of kelp forests. Kelp forest islands and urchin barren islands differ with respect to oceanic currents. O Kelp eat urchins, thus preventing their establishment.Tundra 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 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) C) very short growing season the presence of permafrost D) winters are six months long 2) The taiga is the most extensive biome, stretching…