单词:plant growth in a weed-free environment
单词:plant growth in a weed-free environment 相关文章
by Caty Weaver Broadcast: July 4, 2003 This is Steve Ember with the VOA Special English Environment Report. Scientists in the United States say plant life has increased on Earth in the past twenty yea
-There are at least pieces of evidence which show really serious impacts from levels of neonicotinoids that bees, wild bees could be exposed to in wild environment.And the arguement against the ban was laid out by one of the pesticide manufacturers.
EXPLORATIONS -January 30, 2002: Population and the Environment By Cynthia Kirk VOICE ONE: This is Bob Doughty. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Tod
Agriculture Report - Getting a Firm Grip on Weed Control 农业报道 - 控制杂草生长的办法 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 When is a plant considered a weed? Experts at Pen
[00:06.35]READING [00:07.58]THE BIRTH OF A SCIENCE [00:10.19]Before the eighteenth century, botany was merely a branch of medicine. [00:13.90]Unit then, mostly doctors and surgeons studied herbs. [00:17.97]Attempts had been made by others to classify
[00:06.35]READING [00:07.58]THE BIRTH OF A SCIENCE [00:10.19]Before the eighteenth century, botany was merely a branch of medicine. [00:13.90]Unit then, mostly doctors and surgeons studied herbs. [00:17.97]Attempts had been made by others to classify
Scientists develop herbicide-resistant seeds that can kill the parasitic plant. Transcript of radio broadcast: 23 June 2008 This is the VOA Special English Development Report. A sorghum field infested with striga, or witchweed Farmers in Africa call
This is the VOA Special English Agriculture Report. When is a plant considered a weed? Experts at Penn State University have a simple answer: When its undesirable qualities outweigh its good qualities. Consider this: Crops generally produce several
Agriculture Report - Ideas for Getting a Firm Grip on Weed Control 农业报道 - 控制杂草生长的办法 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 Weeds compete with plantings for water
1. Mark is calling the gardening show about ____________. A. a diseased fruit tree B. a strawberry patch C. some dying flowers 2. His wife received the particular plant(s) from her _______________. A. mother B. sister C. a close friend 3. Mark thinks
Are We Endangered? Steve Jones is an environmental expert who tries to keep animals and plants from becoming endangered. We are not alone in the world. We human beings could not survive without all the plants and animals around us. We often talk abou
[00:-1.00]Discuss these questions with your partner. [00:-2.00]1.How do plants and animals live together? [00:-3.00]2.What do human beings need to survive? [00:-4.00]3.What do plants and animals need to survive? [00:-5.00]4.What do animals do to surv
Agriculture Report - The Seeds of Weed Control Advice for suppressing the growth of unwelcome plants. Transcript of radio broadcast: 17 March 2008 This is the VOA Special English Agriculture Report. When is a plant a weed? When its undesirable quali
This is the VOA Special English Agriculture Report. When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities. Consider that crops generally produce several hu
Getting a Firm Grip on Weed Control This is the VOA Special English Agriculture Report. When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities. Consider the
Agriculture Report - Getting a Firm Grip on Weed Control 农业报道 - 严格控制杂草 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 When is a plant considered a weed? Experts at Penn State U
Lesson 74 Only A Weed 第74课 蒲公英 All through the summer, and during spring and autumn as well, our meadows and waste places are thickly dotted with the bright-yellow flowers of the common weed called the dandelion. And even throughout the win
ENVIRONMENT REPORT — April 12, 2002: Medicinal Plant Conservation By Mario Ritter This is the VOA Special English ENVIRONMENT REPORT. Throughout history, people around the world have used traditiona
Voice 1 Hello and welcome to Spotlight. I'm Joshua Leo. Voice 2 And I'm Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand no matter where in the world they live. Voice 1 Imagine a tree. Now, make
A rise in the world's population is having serious, negative effects on the environment. Some scientists believe that the only way to solve the problem is to set up a colony on the Moon. Others argue that the cost would be far too great and other sol