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1.they are called isomers because they differ from ch2 units, and have the same general formula cnh2n+2
2.general formula cnh2n
29.the each levels or steps in food chain
2.do not cause pollution
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1. These compounds are called isomers as they can be represented in different structures ( depending on which they would have different names ) but, will have the same molecular formula.
2. They belong to the homologous series of alkanes. So their general formula is CnH2n + 2.
29. Every level or step in a food chain is called a trophic level.
Biodegradable substances do not pollute the environment.
Substances like fruit and vegetable peels (organic waste) can be made into compost which increases soil fertility and enriches the soil with nutrients.