- 1 6 Bài soạn "Cách làm bài văn nghị luận về một đoạn thơ, bài thơ" lớp 9 hay nhất
- 2 6 Bài soạn "Chủ đề và dàn bài của bài văn tự sự" lớp 6 hay nhất
- 3 6 Bài soạn "Đề văn biểu cảm và cách làm bài văn biểu cảm" lớp 7 hay nhất
- 4 6 Bài soạn "Cách làm bài văn biểu cảm về tác phẩm văn học" lớp 7 hay nhất
- 5 10 Bài văn so sánh hình ảnh người lính trong hai bài thơ "Đồng chí" và "Bài thơ về tiểu đội xe không kính" lớp 9 hay nhất
- 6 6 Bài soạn "Đề văn thuyết minh và cách làm bài văn thuyết minh" hay nhất
- 7 8 Bài văn cảm nhận về khổ thơ cuối bài "Sang thu" của Hữu Thỉnh lớp 9 hay nhất
- 8 6 Bài soạn "Tìm hiểu đề và cách làm bài văn tự sự" lớp 6 hay nhất
- 9 5 Bài soạn Phân tích đề, lập dàn ý bài văn nghị luận (Ngữ Văn 11) hay nhất
- 10 6 Bài soạn "Luyện tập: Đưa yếu tố biểu cảm vào bài văn nghị luận" lớp 8 hay nhất
Introduction to Global Inequality
The Millennium Development Goals (MDG) were an ambitious start to the 21st century. (Photo courtesy of U.S. Mission Geneva/flickr) In 2000, the world entered a new millennium. In the spirit of a grand-scale New ...
The Electromagnetic Spectrum
In this module we examine how electromagnetic waves are classified into categories such as radio, infrared, ultraviolet, and so on, so that we can understand some of their similarities as well as some of their differences. We will also find that there are ...
Chemical Digestion and Absorption: A Closer Look
As you have learned, the process of mechanical digestion is relatively simple. It involves the physical breakdown of food but does not alter its chemical makeup. Chemical digestion, on the other hand, is a complex process that reduces food into its chemical ...
Normal, Tension, and Other Examples of Forces
Forces are given many names, such as push, pull, thrust, lift, weight, friction, and tension. Traditionally, forces have been grouped into several categories and given names relating to their source, how they are transmitted, or their effects. The most ...
Introduction to Rotational Motion and Angular Momentum
The mention of a tornado conjures up images of raw destructive power. Tornadoes blow houses away as if they were made of paper and have been known to pierce tree trunks with pieces of straw. They descend from clouds in ...
Conductors and Electric Fields in Static Equilibrium
Conductors contain free charges that move easily. When excess charge is placed on a conductor or the conductor is put into a static electric field, charges in the conductor quickly respond to reach a steady state called electrostatic equilibrium . ...
Barrier Defenses and the Innate Immune Response
The immune system can be divided into two overlapping mechanisms to destroy pathogens: the innate immune response, which is relatively rapid but nonspecific and thus not always effective, and the adaptive immune response, which is slower in its development ...
Prevention and Treatment of Viral Infections
Viruses cause a variety of diseases in animals, including humans, ranging from the common cold to potentially fatal illnesses like meningitis ([link]). These diseases can be treated by antiviral drugs or by vaccines, but some viruses, such as HIV, are capable ...
Speciation
The biological definition of species, which works for sexually reproducing organisms, is a group of actually or potentially interbreeding individuals. According to this definition, one species is distinguished from another by the possibility of matings between ...
Embryonic Development
Throughout this chapter, we will express embryonic and fetal ages in terms of weeks from fertilization, commonly called conception. The period of time required for full development of a fetus in utero is referred to as gestation (gestare = “to ...




