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State the meaning of “biodiversity”. List one advantage each of conserving f orests and wild life. CBSE class10 Science 20161 AnswerWhat is biodiversity? What will happen if biodiversity of an area is not preserved? Mention one effect of it. CBSE- class10- Science 20151 AnswerList two physical and two chemical properties of acetic acid which a student can test in the school laboratory. CBSE class10 Science 20161 Answer( a ) Fertilization is possible if ovulation has taken place during middle of menstrual cycle. Give reasons . ( b ) List in tabular form two distinguishing features between a sperm and an ovum. CBSE class10 Science 20161 AnswerList four problems caused by non – biodegradable wastes . CBSE class10 Science 20161 AnswerList four problems caused by non – biodegradable wastes . CBSE class10 Science 20161 AnswerState and describe in brief any three main factors responsible for the rise of new species. CBSE class10 Science 20161 AnswerName the gas libe rated when ethanol reacts with S odium metal? How do we get ethe ne from ethanol? Write chemical equation to justify your answer. State the role of acid in this reaction. CBSE class10 Science 20161 Answer( a ) What are fossils? How are fossils formed? Describe in brief, two methods of determining the age of fossils . ( b ) List any two roles of fossils in tracing evolutionary relationships . CBSE class10 Science 20161 AnswerList two main causes of the pollution of water of the river Ganga . State how pollution and contamination of river water prove harmful for the health of the people of neighbouring areas. CBSE- class10- Science 20151 AnswerWhat are the hydrocarbons? Distinguish alkanes from alke nes and each of them from alkynes giving one example of each. Also draw the structure s of each compound cited as example to justify your answer . CBSE class10 Science 20161 Answer( a ) What is fragmentation in organisms ? Name a multicellular organism which reproduces by this method. ( b ) How does regeneration take place? Why is this process not possible in all animals? CBSE class10 Science 20161 AnswerName the life process of an organism that helps in the growth of its population. CBSE- class10- Science 20151 AnswerList the summary of the notations for ER diagrams. Include symbols used in ER diagram and their meaning. Database Management Systems - 10CS54 VTU notes 8 Marks (Jun / July2014/Jan 2016) 0 AnswerState the evidence we have for the origin of life from inanimate matter. -cbse-biology-class10-20111 AnswerName two plants that are grown by vegetative propagation. CBSE class10 Science 20161 AnswerWhat is the focal length of a plane mirror? Which mirror has larger field of v iew – concave or convex? Where is this property of the mirror used? CBSE class10 Science 20161 AnswerExplain the meaning of the word ‘electromagnetic’ and ‘induction’ in the term electromagnetic induction. On what factors does the value of induced current produced in a circuit depend? Name and state the rule used for determination of directi1 AnswerManagement is the process of getting things done. State the meaning of the term process used in this statement. -CBSE business studies 2016 class 111 AnswerList six specific characteristics of sexual reproduction. CBSE- class10- Science 20151 Answer