[听力原文]17-20 Scientists have discovered that plants themselves produce many poisonous chemicals for defense against insects. But insects have developed ways of dealing with them and, in fact, have been eating plants for about 250 million years. Now insects are using these same mechanisms to de...
A. If plants can grow quickly in space. B. If plants can grow normally in microgravity environments. C. If plants can grow with less water in space. D. If plants can grow with more light in space. 相关知识点: 试题来源: 解析 B。解析:文章中明确提到“Scientists want to know if plants...
What is the finding of scientists A.Plants can save water.B.Photosynthesis is complex.C.High carbon dioxide is not good to crops.D.The new way of food engineering raises production. 相关知识点: 试题来源: 解析 A 细节题。科学家们的发现是植物能储存水。其他选项均未出现在文中。
The two German scientists named Theodore Schwann and Mattias Schleiden concluded that all living organisms are composed of cells. Matthias Schleiden...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough home...
happiness—arebehindtheso-called“runner?shigh”,astudysuggestedthattheremaybemoreto thisphenomenonthanwepreviouslyknew. Accordingto arecentstudy published by a group ofscientistsfrom several German universities,agroupofchemicalscalledendocannabinoids(内源性大麻素)mayactuallybe responsibleforthisfamiliargreatfeelin...
What have scientists discovered about plants and insectsA.Plants produce many poisonous chemicals for defense against insects.B.Insects develop ways of dealing with natural poisonous chemicals but not man-made ones.C.Farmers must spray plants all the tim
Knowing what types of plants were growing in the area allows the scientists (make) inferences about the climate at that time by using knowledge about modern and historical distributions of plants in relation to climate. (所给词的适当形式填空)...
Scientists conducted the study ontobacco plants. But they think the genetic modification wouldproduce the same results in staples such as corn and rice. 相关知识点: 试题来源: 解析 According to a study published in the journal Science,13. What does the plant's protective system need...
Because different plants produce differently shaped phytoliths, scientists can identify the type of plant from ancient remains.So, those scientists in Uganda, dug down to sediments that were 5,000 years old. And what do you think they found? Banana phytoliths! Obviously this meant that we had...
A new study found that when plants are stressed, they make special sounds saying what’s wrong. Earlier studies had shown that plants shake when under stress. But for years, scientists have doubted whether those shakes become sound waves (声波). By studying tomato plants inside a greenhouse, ...