Living things grow. When living things grow, they increase in size. They also become more complex. For example, when babies grow into toddlers, they have more hair and longer legs and arms. Animals need to eat food to help them grow. Plants do not need to eat food to grow. Plants make their own food by using light. Like animals, plants also increase in size and become more complex as they grow.
🟢 Paragraph 2 · Living Things Can Respond to Changes 生物能对变化作出反应
Living things respond to changes in the environment. When bright light is shone into our eyes, our eyelids will shut immediately. Shutting our eyelids in bright light prevents too much light from entering our eyes and damaging them. This ability to respond to changes in the environment helps to keep us safe. Plants are also able to respond to changes in the environment. When you place a plant near the window, the plant tends to grow towards sunlight. The mimosa plant is commonly called "touch-me-not". It has leaves that will fold inwards and droop when they are touched. The folding of the leaves is an example of a living thing responding to changes.
Living things reproduce. When living things reproduce, there will be more of them. The ability to reproduce is important to ensure the survival of all living things. Living things that are not able to reproduce will become extinct. Some animals reproduce by giving birth to their young alive. Other animals lay eggs and their young hatch out of the eggs. Some plants reproduce by producing seeds. Other plants can reproduce through spores. Living things grow, respond to changes and reproduce.