must be broken down into
51biosphere — biospheric /buy euh sfer ik/, adj. /buy euh sfear /, n. 1. the part of the earth s crust, waters, and atmosphere that supports life. 2. the ecosystem comprising the entire earth and the living organisms that inhabit it. [1895 1900; < G Biosphäre; …
52oxidation–reduction reaction — ▪ chemical reaction Introduction also called redox reaction any chemical reaction in which the oxidation number of a participating chemical species changes. The term covers a large and diverse body of processes. Many oxidation– reduction… …
53Saddle seat — is a style of horseback riding within the category of English riding that is designed to show off the high trotting action of certain horse breeds. The style developed into its modern form in the United States, and is also seen in Canada and… …
54Fencing practice and techniques — of modern competitive fencing are governed by the FIE, though they developed from conventions developed in 18th and 19th century Europe to govern fencing as a martial art and a gentlemanly pursuit. The modern weapons for sport fencing are the… …
55Wind — For other uses, see Wind (disambiguation). Wind, from the …
56Africa — /af ri keuh/, n. 1. a continent S of Europe and between the Atlantic and Indian oceans. 551,000,000; ab. 11,700,000 sq. mi. (30,303,000 sq. km). adj. 2. African. * * * I Second largest continent on Earth. It is bounded by the Mediterranean Sea,… …
57calendar — calendrical /keuh len dri keuhl/, calendric, calendarial /kal euhn dair ee euhl/, calendarian, calendaric, adj. /kal euhn deuhr/, n. 1. a table or register with the days of each month and week in a year: He marked the date on his calendar. 2. any …
58United States Marine Corps Recruit Training — The Drill Instructor conducts the vast majority of training a recruit will receive. United States Marine Corps Recruit Training, commonly known as boot camp , is a program of initial training that each recruit must successfully complete in order… …
59Proofs of Fermat's little theorem — This article collects together a variety of proofs of Fermat s little theorem, which states that:a^p equiv a pmod p ,!for every prime number p and every integer a (see modular arithmetic). Simplifications Some of the proofs of Fermat s little… …
60Backcountry snowboarding — is a unique sport that is rapidly growing in popularity. The sport of backcountry snowboarding is characterized by the fresh tracks and deep powder that only the slopes of a remote mountainside can offer. The sport is a completely separate… …
