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- topic: feedback mechanism How do you redefine homeostasis if it were used to refer to the functioning of an ecosystem rather than a single organism pls explain do not just copy from google tyExplain how the allocation of carbon to plant roots influences net carbon gain by plants. 7) Define ectothermy, endothermy, poikilothermy, homeothermy, and heterothermy, and give examples of organisms that use each strategy. 8) Discuss several strategies used by animals to maintain body temperatures within the thermoneutral zone during extreme cold and extreme heat. 9) Discuss the physiological changes that occur in organisms when they go into daily or seasonal torpor. 10) Discuss the three distribution patterns of individuals within a population and explain the conditions that give rise to each pattern. 11) Describe several approaches used by ecologists to establish age structure for plant and animal populations. 12) Some animals migrate daily, whereas others migrate seasonally. Give an example of each type of migration pattern and explain the benefit of this pattern to the organisms exhibiting it. 13) Describe and illustrate exponential population growth. Under what conditions would…MAKE CONNECTIONS Plants use statoliths to detectgravity (see Figure 39.22). How do plants and animalsdiffer with regard to the type of compartment in whichstatoliths are found and the physiological mechanism fordetecting their response to gravity?
- MAKE CONNECTIONS Review the discussion of feedback regulation in Concept 1.1. Could effects of globalwarming on peatlands alter CO2 concentrations in waysthat result in negative or positive feedback? Explain.MAKE CONNECTIONS Based on Figure 9.17, explainwhy hydroponically grown plants would grow muchmore slowly if they were not sufficiently aerated.MAKE CONNECTIONS There are vast stores of organicmatter in the soils of northern coniferous forests andtundra around the world. Suggest an explanation forwhy scientists who study global warming are closelymonitoring these stores (see Figure 55.14).
- WRITE ABOUT A THEME: INTERACTIONS Organisms interactwith each other and the physical environment. In a shortessay (100–150 words), explain how the response of diatompopulations to a drop in nutrient availability can affect bothother organisms and aspects of the physical environment(such as carbon dioxide concentrations).MAKE CONNECTIONS Negative feedback is a processthat regulates biological systems (see Concept 40.2).Explain how the density-dependent birth rate of dunefescue grass exemplifies negative feedback.Animal communities surrounding deep-sea thermal vents appar-ently exist in total independence of solar energy. How is this exis-tence possible?
- For every megajoule of used by the phytoplankton in the michigan. How many joules of energy are used in building cell tissue in the lake trout?How many in humans? Use the food chain pathPhytoplankton > zooplankton > alawite > lake trout > humansGiven that only 10% of energy consumed is converted biomas.Activity 3: DIFFERENCES IN SPECIESResearch 5 similar species with different characteristics.Example: Gartner snakes live One lives in waterin the same regionOne lives in landExplain 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…