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Q17. The diagram represents the flow of substances within a balanced e

Q17. The diagram represents the flow of substances within a balanced ecosystem. The boxes are various trophic levels. Which box represent the producers? Key Shows flow of organic substances Shows flow of carbon dioxide

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CHAPTER 6 Life Processes Tow do we tell the difference between what is alive and what is not shouting loudly on the dog rumning, or a cow chewing cud. or a man if the dog or the cow or the man were asleep? We would still think that they were alive, but how did we know that? We see them breathing. and we know that they are alive. What about plants? How do we know that they are alive? We see them green. some of us will say. But what about plants that have leaves of colours other than green? They grow over time, so we know that they are alive, some will say. In other words, we tend to think of some sort of movement, efther growth-related or not, as common evidence for being alive. But a plant that is not visibly growing is still alive, and some animals can breathe without visible movement. So using visible movement as the defining characteristic of life is not enough. Movements over very small scales will be invisible to the naked eye movements of molecules, for example. Is this invisible molecular movement necessary for life? If we ask this question to professional biologists, they will say yes. In fact, viruses do not show any molecular movement in them (until they infect some cell). and that is partly Why are molecular movements needed for life? We have seen in earlier Why are molecular movements needed for hie? We have seen in earlier classes that living organisms are well-organised structures; they can have tissues, tissues have cells, cells have smailer components in them, and so on. Because of the effects of the environment, this organised. ordered nature of living suructures is very hikely to keep breating down living creatures must keep repairing and maintaining their structures. Since all these structures are made up of molecules, they must move molecules around all the time. What are the maintenance processes in living organisms? Let us explore.
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Question Text
Q17. The diagram represents the flow of substances within a balanced ecosystem. The boxes are various trophic levels. Which box represent the producers? Key Shows flow of organic substances Shows flow of carbon dioxide
TopicBiology
SubjectScience
ClassClass 10