Question

Give one example of how living things grow and change . Give example of yourself or your surrounding.

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Answer 1

Answer:

Living things can grow in two ways, based on the division and replication of living cells. To divide, cells first need to grow enough to ensure there is enough living material for two cells. Such growth takes energy, which living cells get from organic compounds such as carbohydrates. The cells combine the compounds with oxygen to form carbon dioxide in a water-based solution. This reaction releases enough energy for the cells to produce what they need to grow. In this way, bone cells produce more bone, skin cells more skin and eventually the cells continue dividing to keep the bone and skin growing. This is the kind of growth that produces more of an existing material.

In a second type of growth, cells divide, but the new cells are different from the original ones. This happens when a new living thing grows and ages or when conditions change. For example, a baby grows teeth, a vegetable seedling grows a root and leaves, or a young bird grows feathers. This is controlled growth and is governed by the genes in a living thing's cells. For both types of growth, the way cells generate energy and divide remains the same.

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