The struggle for life usually refers to the struggle for survival. All the work that man does for his daily needs is included in the struggle of life. Someone can run the family by his work , again no one can. Those who cannot , are said to have failed or been defeated in the struggle for life. According to Charles Darwin, the struggle for life or the struggle for survival is --- for limited food and shelter , for geometric reproduction, etc., the fauna has to go through various life struggles. The winners survive in the environment and the losers become extinct like failed soldiers. For example --- tall giraffe and bet giraffe we can divide this struggle into three parts. Namely --- 1) Inter-species struggle 2) Inter-species struggle