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3. ___________ occurs when there is a lack of rain for a long time.
                          4.  Teak wood are much in demand for ____________.

                          5. __________ do not decompose easily and can last long in the soil.

                          6.  Increasing number of vehicles causes air and ____________ pollution.


                    B.  Write (T) for true and (F) for false statements.

                          1.  Living things that can prepare their food are known as producers.

                          2.  All animals are decomposers.
                          3.  Forest are cleared to build industries.

                          4.  Elephants are killed for their horns.

                          5.  Bacteria and fungi are scavengers.

                          6.  In the absence of decomposers, the soil would not get the nutrients
                              needed by plants to grow.


                    C.  Match the following.

                              Column A                                                        Column B
                          1. Producer                                                    (a) Bacteria

                          2. Herbivore                                                  (b) Fox

                          3. Carnivore                                                   (c) Crow

                          4. Omnivore                                                   (d) Rabbit

                          5. Scavenger                                                   (e) Human being
                          6. Decomposer                                                  (f) Grass


                    D. Tick () the correct answer.


                          1.  The process by which plants prepare food in the presence of sunlight is known
                              as ____________.

                              (a) food chain                                (b)  photosynthesis
                              (c) decomposition                             (d)  interdependence

                          2.  Which of the following is a scavenger?

                              (a) Squirrel           (b)  Lion             (c)  Jackal          (d)  Bacteria

                          3.  Which of the following is a decomposer?

                              (a) Frog               (b)  Lion             (c)  Jackal          (d)  Bacteria



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