Question

The 7th term of an AP is 39 and 17th term is 69. Find tha series

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

The availability of food gives rise to regional difference (plants and animals). Warmer climate extended opportunity for the increase in food availability for the people. There was development of grassland and increase in the number of herbivorous animals. The practice of adaptation or keeping of an animal or plant, through breeding turned advantageous to humans. Domestication led to herding. Animals were reared with care as they provided milk and meat. Wool and skin were obtained from these animals that helped people to protect themselves from cold weather. Human influence transformed wild plants and animals.

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