7.8 工厂的重要性
Section outline
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Where does electricity come from?
::电源从哪里来?You probably have noticed these huge power lines delivering electricity across the country. But how is this electricity generated? Although there are some alternate sources like wind power and nuclear power , the majority of electricity in the United States is generated by burning coal . Seedless plants were central in forming the coal deposits that we depend on.
::你可能已经注意到了这些巨大的电力线,它在全国各地输送电力。但这种电力是如何产生的呢?尽管有风力和核电等替代来源,但美国大部分电力都是燃烧煤炭产生的。 幼苗工厂是我们赖以生存的煤矿的核心。Importance of Seedless Plants
::无种子植物的重要性Seedless plants have been tremendously useful to humans. Without these plants evolving millions of years ago, life as we know it would be very different.
::没有种子的植物对人类极为有益。 没有这些植物在数以百万计的年前不断演变,我们所知道的生命将会大不相同。Seedless Plants Became Coal
::无种子植物成为煤炭The greatest influence seedless plants have had on human society is in the formation of coal millions of years ago. When the seedless plants died, became buried deep in the Earth, and were exposed to heat and pressure, coal formed. Coal is essentially made of the fossilized carbon from these plants. Now coal is burned to provide energy , such as electricity.
::无种子植物对人类社会的最大影响是数百万年前的煤炭形成。 当无种子植物死亡,被埋在地球深处,并暴露在热和压力之下,煤炭形成。煤炭基本上由这些植物的化石碳制成。 现在煤炭被燃烧来提供能源,比如电力。Current Uses
::目前用途But some seedless plants still have uses in society today. Peat moss is commonly used by gardeners to improve soils, since it is really good at absorbing and holding water ( Figure ).
::但有些没有种子的植物如今仍然在社会上有用。 园丁通常使用食用苔苔来改良土壤,因为它在吸收和蓄水方面真的很行(图 ) 。Depending on the location, ferns have several different uses worldwide. Ferns are found in many gardens as ornaments, and are used as indoor plants. In tropical regions, the fern is used as a food source by many locals. The fronds can also be used to weave hats and baskets. The fiddleheads of certain species of ferns are used in gourmet food. Some species of ferns, such as the maidenhair fern, are used as medicines. In Southeast Asia, the fern is used in rice fields as a biological fertilizer. Much of the world’s fossil fuels consist of remains of ferns and their relatives.
::依不同地点不同, 胎儿在世界各地有几种不同用途。 在许多花园中, 鸟类被作为装饰品发现, 并被用作室内植物。 在热带地区, 动物被许多当地人用作食物来源。 这些动物也可以用于编织帽子和篮子。 某些种类的胎儿的小提毛头被用于食谱食品中。 一些种类的胎儿,如婚纱,被用作药物。 在东南亚, 动物被作为生物肥料用于稻田。 世界上许多化石燃料都由动物及其亲属的残渣组成。The horsetail’s reedy exterior and silica content made it popular as a metal polisher and abrasive cleanser. Herbalists still use horsetail to treat a variety of kidney/ bladder problems, including inflammation , infection, and kidney stones , and it is used as a remedy for brittle nails. Club moss is also used to treat ailments and digestive problems. Club moss spores can be dusted onto the skin and provide relief from itching and irritation, and provide the skin with protection. Extinct forests of club moss have fossilized and developed into huge beds of coal.
::马尾的外皮和硅含量使得它作为金属抛光机和腐蚀性净化器受到欢迎。 草药师仍然用马尾来治疗各种肾/卵球问题,包括炎症、感染和肾结石,并用作油指甲的治疗方法。 俱乐部的苔榈也被用来治疗疾病和消化问题。 俱乐部的苔榈可以粉碎皮肤,减轻皮肤的痒痒和刺激,并为皮肤提供保护。 俱乐部的苔榈树已经化化化,并发展成巨大的煤床。Sphagnum, or peat moss, is commonly added to soil to help absorb water, and keep it in the soil.
::通常在土壤中添加石膏,或泥炭苔,以帮助吸收水,并将水留在土壤中。Summary
::摘要-
Seedless plants were responsible for the formation of coal millions of years ago.
::数以百万计的数以百万计年前,无种子植物造成了煤炭的形成。 -
Two ways that gardeners utilize seedless plants are peat moss as a soil amendment and ferns as ornamental plants.
::园丁使用无种子植物的两种方式是作为土壤改良的泥土和作为装饰植物的粪便。
Explore More
::探索更多Use the resource below to answer the questions that follow.
::利用以下资源回答以下问题。-
Coal Thickness Mystery
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:1: 57)处的煤厚度神秘学
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How does coal form?
::煤炭如何形成? -
Low sulfur coal produces less pollution when burned than high sulfur coal. Name one factor that affects the sulfur content in coal.
::低硫煤燃烧时产生的污染比高硫煤少。 请指出影响煤炭中硫含量的一个因素。 -
How do scientists feel the Powder River Basin coal was formed?
::科学家们如何看待波德河流域煤炭的形成?
Review
::回顾-
How was coal formed?
::煤炭是如何形成的? -
What is one use of ferns?
::幼兽有什么用呢?
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Seedless plants were responsible for the formation of coal millions of years ago.
