A. They add pollutants to water. B. They filter pollutants and sediments. C. They make water dirtier. D. They speed up water flow. 相关知识点: 试题来源: 解析 B。中文解析:文中提到“They help in water purification by filtering pollutants and sediments.”,即湿地通过过滤污染物和沉积物来帮助...
线索词为“important”“because”,教授在解释水在热解聚制油过程中的重要作用时说Water is an important ingredient because it reduces the amount of heat needed,which increases the efficiency of the process.即水可以减少所需的热量,这大大提高了产油的效率。因此C选项是正确答案。该部分未提到水可以将有机...
A. They add pollutants to water. B. They make water dirtier. C. They help filter pollutants and sediments from water. D. They have no E. ffect on water purification. 相关知识点: 试题来源: 解析 C。解析:文章提到 Wetlands also play a crucial role in water purification. They help filter...
B. They purify water. C. They carry water from one place to another. D. They create water. 相关知识点: 试题来源: 解析 C。解析:Rivers also play a role in the water cycle. They carry water from one place to another and help in the distribution of water.。反馈 收藏 ...
A. Making water more polluted. B. Ignoring water purification. C. Playing a vital role in water purification. D. Reducing the need for water. 相关知识点: 试题来源: 解析 C。解析:文章中说化学在水净化中起着至关重要的作用,使用各种技术去除污染物,使水可安全饮用等,所以答案是 C。反馈...
D. They help regulate the climate by absorbing carbon dioxide and releasing oxygen. 相关知识点: 试题来源: 解析 C。原因:文中提到“They also play a crucial role in water cycle, preventing soil erosion and maintaining soil fertility.”。 反馈 收藏 ...
What role does chlorophyll play in photosynthesis? A. It absorbs water. B. It absorbs carbon dioxide. C. It absorbs light energy. D. It releases oxygen. 相关知识点: 试题来源: 解析 C。解析:叶绿素在光合作用中吸收光能。A 选项吸收水的不是叶绿素;B 选项吸收二氧化碳的也不是叶绿素;D 选项释放...
What role does groundwater play in the hydrologic cycle? Groundwater: As the name suggests, groundwater exists below the earth's surface. However, groundwater may not be entirely confined to planet Earth. There may be subsurface water on Europa, which is one of the moons of the planet Jupi...
The ecological value of the Amazon Rainforest is immense. It helps regulate the global climate by absorbing carbon dioxide and releasing oxygen. It also plays a crucial role in maintaining water cycles.”,可推断出雨林通过释放水分来维持水循环。
The most important role the ocean plays in keeping us alive isproducing oxygen. But it’s not the water itself that does this, it’s what exists beneath the surface. Plankton are a large variety of tiny organisms which include things like algae, bacteria, cr...