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Question:They're related about data of animals of an ecosystem viewed as a pyramid... But can I get a simple explanation on how to remember the differences between them. plz n ty =D

Answers:Here's the way to remember it: bigger animals need more energy to sustain them. That means that whatever they're feeding on has to be more abundant than they are. the basic rule of energy conversion is that whatever you consume, you get to keep 10% of the energy it contains. The rest is excreted or secreted by your body. So if a lion wants to put on a pound of weight, it has to eat 10 pounds of zebra. If a zebra wants to put on a pound of weight, it has to eat 10 pounds of grass. Therefore, for every pound of lion, 100 pounds of grass must be consumed. This is the biomass pyramid. The numbers are very similar. The closer to the bottom of the pyramid an animal or plant is (plants are producers and are generally at the very bottom of the pyramid with a few exceptions), the more numerous they may be. Because there is more below them to consume. Top predators are fewer because they are limited by their food sources.

Question:Describe the 3 different types of ecological pyramids

Answers:Ecologists represent the relative amounts of energy in an ecosystem in an ecological pyramid. The pyramid is divided into sections, each representing one trophic level. An ecological pyramid can show energy, biomass or the number of organisms in a food web (a community of organisms where there are several interrelated food chains). A pyramid of numbers shows the number of organisms at each trophic (relating to nutrition) level. In pyramids of numbers, each successive trophic level is occupied by fewer organisms. Thus the number of herbivores like zebras and wild beasts is greater than the carnivores like lions. A pyramid of biomass illustrates the total biomass at each successive trophic level. Biomass is the total amount of living matter at a trophic level. The pyramids of mass show a progressive reduction of biomass in the successive trophic level. The pyramids of mass show a progressive reduction of biomass in the successive trophic levels. A pyramid of energy indicates the energy content in the biomass of a trophic level. These pyramids shown that less energy reaches each successive trophic from the level beneath it because some of the energy at the lower level is used by the organisms to perform work, while some of it is lost. please vote best

Question:So, I was assigned some impossibly hard (for me, at least) Environmental Homework and I'd really appreciate help. So directions are "List different examples of the services of various ecosystems". And the ecosystems listed are as followed: 1. Freshwater Streams and Lakes 2. Freshwater Marshlands 3. Grassland 4. Coasts 5. Agricultural 6. Brackish Estuaries 7. Continental Ocean Shelf Any help is greatly appreciated, thanks!

Answers:1. Freshwater Streams and Lakes The streams move minerals from the tops of mountains to lower areas of ground. Lake levels change. Both of these water movements can deposit healthy soil and nutrients in areas. 2. Freshwater Marshlands Perfect place for bird populations. Also a source of water for agricultural. 3. Grassland Grasslands are usually environments in the making. Lots of new growth happens here. You usually have a huge variety of animals here. 4. Coasts Salt deposits, mineral deposits. The animals here also keep the coast "clean". 5. Agricultural The main service here is control. Humans can do a lot here. 6. Brackish Estuaries Not sure... sorry 7. Continental Ocean Shelf Can't think of what services ecosystems here would perform, but the water here can be a source of energy

Question:2. where is the matter in a molecule of CO2 and H2O? where is the energy ?

Answers:Every community in ecology is a pyramid shape because of the flow of energy. The producers (plants and anything else that uses sunlight for creating biomass) has to make up the most amount of biomass because they feed everything above the pyramid. In each level of the pyramid, there will be less and less nutrients, which is why the pyramid gets thinner and thinner as you go up it. At the top are the top predators, which are getting their energy through many different levels. The scarcity of nutrients and biomass near the top is why there are so few top predators in any ecosystem. There simply isn't enough energy to support many top predators.

From Youtube

Life in Between the Tides - Part 2: Ecosystems and Energy :This video segment explains how energy moves through an ecosystem and the "10% Rule", focusing on the terms: trophic level, energy pyramid, autotrophs, and heterotrophs. This video can be followed by "Activity 2 - Ecosystems and Energy". Part 2 of a series of videos developed by Bret Klopfenstein, Biological Sciences Instructor at Ventura HS as part of his Research Experience for Teachers (RET) program at the Materials Research Lab (MRL) at the University of California, Santa Barbara (UCSB). These videos explore tide pools - a model ecosystem and are designed to be integrated into HS Biological Science curriculums. For accompanying material, please visit www.mrl.ucsb.edu Be sure to see the other parts of this video series.

How Ecosystems Work | Biology | Ecology :Purchase DVD here www.greatpacificmedia.com Segment from the program How Ecosystems Work: Energy Flow and Nutrient Cycles. DVD Description Looks at the processes that are fundamental to all ecosystems. First the concepts of primary productivity, trophic levels, food chains, energy pyramids and the flow of energy through ecosystems are introduced. The program then explains how carbon, nitrogen, phosphorous and water cycle through ecosystems and how human activities can disrupt these cycles and throw them out of balance leading to accelerated eutrophication in lakes in the case of phosphorous imbalances and global warming in the case of carbon imbalances.