How do they get water from their roots to the treetops? Most land trees, including redwoods, have xylem(木质部), or a system of small, tube-like cells. But without a pump, what makes water move through the xylem? Water evapo...
How fast can trees transport water? How can people obtain water from an aquifer? How does water cycle through the environment? How does the water cycle ensure that we have water? How does a hydropower facility generate electricity? How do animals participate in the water cycle?
"Once inside the cells of the root, water enters into a system of interconnected cells that make up the wood of the tree and extend from the roots through the stem and branches and into the leaves. The scientific name for wood tissue is xylem; it consists of a few different kinds of c...
Back then, one of the water sample collectors told me that a lot of trees got by because of the number of leaks from the mains pipes. He even said that repairing the pipes led to trees dying. I hope this isn’t so much the case now, given the need to conserve water. To answer t...
This pattern, known as a “fire regime"(林火动态) isdifferent for each ecosystem.Thick barkTrees infire-prone areas develop thicker bark, in part, because thick bark does not catch fre or burn easily. Italso protects the inside of the trunk—the living tssues that transport water and ...
完整的句子是:How often do you water the trees? 你多久浇一次树? **1. 分析句子结构:** 句子“___ do you water the trees?”缺少一个疑问副词,需要根据答句“Every week.”选择合适的词语。 **2. 分析选项含义:** - How much:多少,询问数量。 - How many:多少,询问可数名词的数量。 - W...
【题目】How ___water do new trees need? A. soon B. many C. much D. often试题答案 在线课程 【答案】C 【解析】 试题分析:句意:新的树苗需要多少水?How soon表示多久,提问in+一段时间;How many+可数名词的复数;How much+不可数名词;How Often提问频度。故选C。练习册系列...
关键词(句):three times:三次 water the trees:浇树 翻译:你多久去浇一次树?一周三次。how soon意为“还要多久”,是对从某个基本时间到将来某动作结束或某动作发生这段时间提问,常用在一般将来时态的句子中,其答语通常是“in + 一段时间”.how often意为“多久……次、是否经常”,用来提问在某一特...
百度试题 结果1 题目8.新树苗需要多少水?How muchwaterdonewtreesneed? 相关知识点: 试题来源: 解析 答案见上
【题目】How ___water do new trees need? A. soon B. many C. much D. often试题答案 在线课程 【答案】C 【解析】 试题分析:句意:新的树苗需要多少水?How soon表示多久,提问in+一段时间;How many+可数名词的复数;How much+不可数名词;How Often提问频度。故选C。练习册系列...