根据关键信息 make food定位到第二段"Their leaves use sun- light to combine carbon dioxide and water to make food.” ,由此可知植物的叶子利用阳光将 二氧化碳和水合成食物。 与题意相符,故答案 是T。 2.题意:植物用它们的茎吸收阳光。 根据“Plants take in light by their leaves."可知,植物用它们 ...
根据“Plants take in carbon dioxide(二氧化碳) and make oxygen(氧气) humans and animals need. Plants make 98% of the oxygen we breathe.”、“The world’ s food supply (供应) depends on about 150 plant species.”以及“Some plants are useful as medicines.”可知植物不能提供二氧化碳。故选B。
植物为什么那么重要? Air空气 Plants take in carbon dioxide (二氧化碳) and make oxygen (氧气) humans and animals need.Plants make 98% of the oxygen we breathe. 植物吸收二氧化碳,释放人类和动物所需的氧气。我们呼吸的氧气有98%都是植物给我们的哦! ...
Plants naturally draw down carbon dioxide and transform it into complex compounds like sugars. Many of the sugars made in photosynthesis are eventually broken down again, returning to the atmosphere. But some carbon stays in the soil—and Ronald and her team want to help bump up how much. The...
Plants need carbon dioxide from air to perform photosynthesis. About 0.03 percent of air consists of carbon dioxide, which is released in the air by respiration of animals, combustion of fossil fuels and decomposition of waste matter. Carbon dioxide enters the plant through the stomata, which are...
The plants also need water and salt from the soil to make food. There are certain cells(细胞)in the leaves which change carbon dioxide and water into sugar. To do this the cells need energy. They get the energy from sunlight. At night when there is no sun, the leaves...
carbon dioxide gas is necessary for plants to performs photosynthesis. It is also a greenhouse gas. Upto certain concentration (approx imatuly 350 ppm) in atmosphere, it is both good raw material as well as essential for keeping the earthworm. But, when
根据“Plants balance our climate. They help take in carbon dioxide, which can slow down global warming.”可知,植物平衡我们的气候,它们有助于吸收二氧化碳,从而减缓全球变暖。故选D。 (3)题详解: 推理判断题。根据文章可知,本文主要介绍了植物对于人类、动物、环境的作用。与“植物”相关的文章最可能出现...
Plants need sunlight to change water and carbon dioxide into a form that they can use. This process, called photosynthesis, uses chlorophyll from the plant's leaves to produce carbohydrates and oxygen. Initially, the type of carbohydrate that photosynthesis produces in plants is glucose. Once the...
why do need plants作文Why Do We Need Plants? Plants are essential to our existence for numerous reasons. Firstly, they are the primary source of oxygen. Through photosynthesis, plants convert carbon dioxide and water into glucose and oxygen, thus keeping our air fresh and breathable. Secondly, ...