Two trees, one common and one rare, are highlighted to increase public awareness of indigenous trees, while various " greening " activities are undertaken by schools, businesses and other organizations.

Two whole numbers m and n are called coprime if their greatest common divisor is 1 ; i. e., if there is no prime number that divides both of them.

Two of the most common polysaccharides are cellulose and glycogen, both consisting of repeating glucose monomers.

Two common bookkeeping systems used by businesses and other organizations are the single-entry bookkeeping system and the double-entry bookkeeping system.

Two versions of Blackwood are common: " standard " Blackwood, developed by Easley, and " Roman key card " or " RKC " Blackwood, named for the Italian team which invented it.

Two thirds of the chemical elements occur on Earth only as compounds, and in the remaining third, often the compound forms of the element are most common.

Two common types of employee crime exist: embezzlement and sabotage.

Two electric multiple unit s of the DBAG Class 423 | class 423 common in several German S-Bahn networks.

* Two clades are sisters if they have an immediate common ancestor.

Two common sources of DMT in the western US are Reed canary grass ( Phalaris arundinacea ) and Harding grass ( Phalaris aquatica ).

Two decades earlier the Royal and Parliamentary Titles Act 1927 had stated that the United Kingdom and the dominions were " equal in status, in no way subordinate one to another in any aspect of their domestic or external affairs, though united by common allegiance to the Crown, and freely associated as members of the British Commonwealth of Nations ".

Two regions are called adjacent if they share a common boundary that is not a corner, where corners are the points shared by three or more regions.

# On 15 September 1790, to his double first cousin Maria Teresa of the Two Sicilies ( 6 June 1772 – 13 April 1807 ), daughter of King Ferdinand I of the Two Sicilies ( both were grandchildren of Empress Maria Theresa and shared all of their other grandparents in common ), with whom he had twelve children, of whom only seven reached adulthood.

Two common examples are shareware and trialware.

Two common types of engineered design for anchoring floating structures include tension-leg and catenary loose mooring systems.

Two numbers are called relatively prime, or coprime if their greatest common divisor equals 1.

Two styles of hearse bodywork are common.

The most common size has 34 strings: Two octaves below middle C and two and a half above ( ending on A ), although folk or lever harps can usually be found with anywhere from 19 to 40 strings.

Two important aspects of a concise language are as follows: First, the most common words ( e. g., " a ", " the ", " I ") should be shorter than less common words ( e. g., " roundabout ", " generation ", " mediocre ",) so that sentences will not be too long.

Two most common forms of engine cooling are air-cooled and water cooled — most modern engines are water cooled.

Two million years ago, scientists believe, the jaguar and its closest relative, the similarly spotted leopard, shared a common ancestor in Asia.

Metals typically consist of close-packed atoms, meaning that the atoms are arranged like sphere Two packing motifs are common, one being body-centered cubic wherein each metal is surrounded by eight equivalent metals.

Two common examples used are:

Two notable examples of this are the ARM compliant AMULET and the MIPS R3000 compatible MiniMIPS.

Two examples of stereocenters.

Two famous medical examples are one promoting Yew juice as a cure for snakebite, and another promoting public flatulence for good health.

Two examples illustrate how the myth developed.

Two good examples of collective nouns are " team " and " government ", which are both words referring to groups of ( usually ) people.

Two notable examples are:

Two such examples are aluminium carbide and beryllium carbide.

Two examples of ideological interpretations that are related to formalism:

Two particular examples are Lillian, an eccentric ( and very nearsighted ) old lady with odd quirks, and Greta, a muscle bound woman who was hired to look after the pets during New Years.

Two examples of these traditions are the parties Long Tall Glasses ( a formal affair thrown by North ) and TQ Day ( a tequila-centered " beach " party thrown by West ).

Two examples are aptitude versus attitude, and employ versus imply.

Two examples are kamacite and taenite, which are found in iron meteorites ; these species differ by the amount of Ni in the alloy ; kamacite has less than 5 – 7 % nickel and it's a variety of native iron, whereas the nickel content of taenite ranges from 7 – 37 %.

Two examples of monolatrism developing from polytheism are the Aten cult in the reign of the Egyptian pharaoh Akhenaten, as well as the rise of Marduk from the tutelary of Babylon to the claim of universal supremacy.

Two examples are fish larvae and sea stars ( also called starfish ).

" Two examples of such " pushing " are particularly important in the magnetosphere.

Two noted examples of attempts to establish a paremiological minimum in America are by Haas ( 2008 ) and Hirsch, Kett, and Trefil ( 1988 ).

Two common examples are X-linked adrenoleukodystrophy and peroxisome biogenesis disorders.

Two examples of these characteristic means of expression are the use of proverbs and the use of Greek language in the plays of Plautus.

Two examples will illustrate this principle:

Two famous examples are the Boyer – Moore and Knuth – Morris – Pratt algorithms, and several algorithms based on the suffix tree data structure.

Two important examples are the contrast between the lines, " Quick, send in the clowns " and " Well, maybe next year.

Two examples of the latter can be found in Hilbert's problems.

Two examples are the Internet browsing consoles provided in some UK McDonald's outlets, and the BT Broadband Internet public phone boxes.