The author mentions that scientists use special instruments to study something. What are these instruments mainly used for? A. Making things look beautiful. B. Helping people see things clearly. C. Understanding and analyzing data. D. Playing music. 相关知识点: ...
D.Nationalparkcitiesare makingimprovements toourlife. D Inthe1970s,chemistJamesLovelockandmicrobiologistLynn MargulisdevelopedtheGaiahypothesis(盖亚 假说):allorganicandinorganiccomponents ontheplanetarepartofoneself-regulatingsystem, workingtomaintainlifeonearth.Scientistsagreethat weneedtakesignificantactiontocontrol...
It may seem like the set for a new reality television show, but there are no prizes, except perhaps for the researchers. They hope to understand what makes one child respond to another, how babies adjust their look to their hands and feet to handle objects, and how...
Texas Tech University is even offering a class called Improving Your Sleep Habits. People suffering from sleep loss are at an increased risk from obesity, psychological problems and car crashes. Students who don’t get enough sleep have poor attendance and lower grades. On top of all that, a ...
The second aspect is the application by all members of society of the special methods of thought and action that scientists use in their work. What are these special methods of thinking and acting First of all, it seems that a successful scientist is full of curiosity - he wants to find ...
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which scientists say could upset this balance. According to the related data, a temperature rise of just 2.1℃ could spell an end for the chocolate industry worldwide by 2050. Farmers in the region are already considering moving cacao production areas thousands of feet uphill into mountainous area...
In the mid-1970s, Sanger wasn’t alone in the race to sequence DNA; almost in parallel, two American scientists, Maxam and Gilbert, developed a technique in which DNA is chemically treated to break the chain at specific bases. Following electrophoresis...
Thanks to accelerated innovations in microscopy, life scientists now have access to a growing suite of imaging tools and techniques. Used alone or in combination with one another, high-powered instruments give researchers new ways to study biomolecular activity and advance their...
a poison ivy infection is considered by some to be humorous. but it is not funny at all. a rash that has the intensity of a fresh mosquito bite and lasts for several days is caused by contact with the plant. poison ivy infection has been 16、 studied by scientists for centuries, but ...