首页
登录
职称英语
[audioFiles]2015m7s/audio_ezfj_20155_019[/audioFiles]
[audioFiles]2015m7s/audio_ezfj_20155_019[/audioFiles]
游客
2023-11-04
35
管理
问题
选项
答案
Vertical Farms
By the year 2050, nearly 80% of the earth’s population will have resided in urban centers. An estimated 109 hectares of new land will be needed to grow enough food to feed them, if traditional farming practices continue as they are practiced today. So, an entirely new approach to farming must be invented, employing cutting edge technologies. The concept of indoor farming is not new.
What is new is the urgent need to scale up this technology to accommodate a fast growing number of people. Vertical farming was thus invented. Rice on the seventh floor, wheat on the twelfth, and enough food within an eighteen-story tower to feed a small city of 50,000.Vertical farms must be cheap to construct and safe to operate. If successfully implemented, they will offer the promise of urban renewal, sustainable production of a safe and varied food supply, and the eventual repair of ecosystems that have been sacrificed for horizontal farming.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3157840.html
相关试题推荐
[audioFiles]audio_ezfm_0312(20104)[/audioFiles]Socialdistancemayaffect
[audioFiles]audio_ezfm_0080(20105)[/audioFiles]Initsmostextremeform,p
[audioFiles]audio_ezfm_0140(20103)[/audioFiles]TheInternetisaworldwide
[audioFiles]2014m8s/audio_ezfj_372_20144[/audioFiles]IdealLife理想人生Theide
[audioFiles]audio_ezf_m_0354(20102)[/audioFiles]
[audioFiles]audio_ezfm_0265(20104)[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_095[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_091[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_003[/audioFiles]
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_002[/audioFiles]
随机试题
[originaltext]MostAmericancollegestudentsneedtobeefficientreaders.
Nexttimeyouenterausernameandpassword,thinkabouttherhythmofyourty
[originaltext]W:WhataretheadvantagesofE-education,ProfessorGu?M:There
A.P波 B.PR间期 C.QRS波群 D.ST段反映两心房去极化过程的是
营养琼脂培养基一般要求高温灭菌温度为()℃。A.100 B.110 C.
中药材适宜采收期确定的主要依据是A.药材中有效物质的含量与药用部分的产量结合考虑
按《中国药典》规定,含量测定的指标成分是盐酸小檗碱的中药是A.黄连 B.艾叶
下列关于项目监理机构组织形式的说法,错误的是()。A.直线制监理组织形式要求总监
容量是锅炉的主要性能指标之一,热水锅炉容量单位是()。A.t/h B.MW
于不发火(防爆的)面层质量验收的说法,正确的有()。A.采用的碎石应选用大
最新回复
(
0
)