Unscramble the given words below to get the correct word using the clues given against them. (a) SATPADAOINT: Specific features or certain habits which enable a living being to live in its surroundings (b) RETECOXNI: Waste products are removed by this process (c) LUMISIT: All livings things respond to these (d) ROUCDPRENTOI: Because of this we find organisms of the same kind


Adaptation is essential for the survival of living organisms. Animals, which are unable to adapt to changing environmental changes die. These adaptations are a result of genetic changes. The animals that survive pass on the mutated genes to their offspring. This is known as naturals selection


Excretion is the process where all the metabolic wastes are removed from the body. Excretion in humans is carried through different body parts and internal organs in a series of processes. Excess water and nitrogenous waste in humans are converted to urine. Urine thus produced is passed to the urinary bladder via the ureters. The urinary bladder is under the control of the Central Nervous System. The brain signals the urinary bladder to contract and through the urinary opening called the urethra, we excrete the urine.


The changes in the environmental conditions to which the organisms respond are known as stimuli. Every living organism responds when an external stimulus acts on it. When various organs work together in a systematic manner to produce a response to the stimulus


Reproduction means to reproduce. It is a biological process by which an organism reproduces an offspring who is biologically similar to the organism. Reproduction enables and ensures the continuity of species, generation after generation. It is the main feature of life on earth.

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