Tag: Short Speech
Cells and Temperature Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are …
Sleep Sleep is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper, …
Bacteria Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of …
Fold Cultures A folk culture is a small isolated, cohesive, conservative, nearly self- sufficient group that is homogeneous in custom and race with a strong family or clan structure …
Vision Human vision like that of other primates has evolved in an arboreal environment. In the dense complex world of a tropical forest, it is more important to see …
The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun;in fact, at the Sun’s very …
Obtaining fresh water from icebergs The concept of obtaining fresh water from icebergs that are towed to populated areas and arid regions of the world was once treated as …
Statistics There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedicated to keeping orderly records of government units (states …
