PPT-“Basic to the understanding of any ecosystem is knowledge of its food web, through which

Lawrence Pomeroy Bioscience 1974 I presume that the numerous lower pelagic animals persist on the infusoria which are known to abound in the open ocean but on what in the clear blue water do these . Energy Powers Ecosystems. Sustainable Practices. Ecologists and economists characterize practices that can be continued indefinitely as . sustainable. .. Ecological Footprint. T. he . area of land required to sustainably provide all resources a population uses and assimilate all the waste it generates, given the prevailing current technology.. Objectives. Learn how a food chain is different from a food web.. Learn how to create a food chain and food web.. Learn how to analyze the interdependence of one organism to another.. Food Web. Life in an ecosystem requires a source of . Ecology is the study of the relationships among organisms and their environment.. . Objectives. Summarize the levels of organization that an ecologist studies. Identify biotic and abiotic factors in an ecosystem. Objecti. ves. Learn how a food chain is different from a food web.. Learn how to create a food chain and food web.. Learn how to analyze the interdependence of one organism to another.. Food Web. Life in an ecosystem requires a source of . Objectives. Define and give examples of organisms at different trophic . levels. Describe how energy flows in a food chain. .. Explain why producers must outnumber consumers in a balanced ecosystem.. Reversing the Deforestation of Haiti. People use charcoal for fuel:. In 1923, 60% of country was covered in forest. Now, less than 2% remains forested. Disrupts ecosystem services that trees provide.. autotrophs. and other organisms from a food chain is represented below. .. Carnivores would most likely be located . in. level . I, only . (. B) level I and level II . (. C) level III, . only. (. D) level II and level III. Scorpion, cactus, cricket, field mouse, shrub, mountain lion, . Snake, Owl, Goat, Lizard, Coyote. Make sure the arrows are going in the right direction!!!!!. Cactus.  Cricket Lizard Snake. Cactus Mouse Snake Owl. LO: . I can define and differentiate biotic and abiotic factors in an ecosystem . (5.L.4A.1). . EQ: . How do biotic and abiotic factors interact with each other in an ecosystem?. Ecosystem. Ecosystem. Before, you learned. • Matter cycles continuously through an ecosystem . • Living things are part of the water, carbon, and nitrogen cycles. Now, you will learn. • How living things move energy through an ecosystem . Section 3. Energy is vital to all living things. Most energy comes directly or indirectly from the sun. Because energy is continuously used by living things, it must be continuously replaced in the ecosystem . Ecosystem is defined as the system resulting from the integration of all living and nonliving factors of the environment.. The word ecosystem is not the synonyms of habitat, community or some other similar description terms. Rather it is a technical term in ecology and refer to a system of living and non living components interacting as a whole. . Dr.Seema Keswani. Assistant Prof. & Head.. Dept. of Zoology. Trophic Levels. The primary source of energy for an ecosystem is the sun. . Photosynthetic organisms, such as plants and algae, change light energy from the sun into energy that they can use to grow. . The sequential inter-linking of organisms involving transfer of food energy from the producers, through a series of organisms with repeated eating and being eaten is referred as . “food chain”. ..