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10. A society’s way of life which requires physical work may depend in part on what and how much others consume.
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Like a human being or an animal, a plant must adapt 1 its environment in order to survive. Survival usually means struggle. It may be hard to think of a plant as “'struggling,” yet that is often the case.A plant, first, must compete with other plants for light, air, soil, and water. Second, it must 2 with people and animals, 3 may eat it or make the environment unfit for it to live in. Third, the physical environment itself may be 4 or inadequate to a plant's needs. Is there enough light, water, air, and soil? Is it warm or cool enough for a given plant species?Light is vital to a plant, especially a green one. Green plants manufacture foodstuffs in sunlight—a process known as 5. Light also affects the rate of water absorption and flower formation.6 must also be taken into account. If it falls below 1° Celsius or rises above 43° Celsius, serious injury or death results for most vegetation. Temperature also directly influences the formation of seeds and the production of blossoms. It also helps determine the geographic 7 of plants.Plants cannot survive without water. Many need immense quantities for their development. Therefore, the humidity of the atmosphere, the amount of 8, and the presence of streams, lakes, and soil moisture are important to plants.Most plants need plenty of air. The atmosphere contains gases 9 are essential to their life: oxygen, carbon dioxide, water vapor, and nitrogen.Not only the air itself, but its movement—the wind—affects plants greatly…Soil is extremely important to land plants. A plant's development depends in large part on the nature of the soil: its wetness, acidity, minerals, and the amount of oxygen it 10.
Match the Chinese terms with their English equivalents.
Many intact ecosystems should be regarded as more valuable than those altered for commercial use.
Reporters circled it, their microphones and cameras trained on the machine as it tried to start up,
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