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 low pitch berimbaus ( called berra-boi and médio ) form the base and a high pitch berimbau ( called viola ) makes variations and improvisations.

Two popular variations of the upright spin are:

Two magnificent large-sale compositions are the Browning, a set of 20 variations on a popular melody ( also known as The leaves be green ) which evidently originated as a celebration of the ripening of nuts in autumn, and an elaborate ground on the formula known as the Goodnight Ground.

Two shortened variations, " Bucs " and " Buccos ", are also commonly used for both the American football team and MLB's Pittsburgh Pirates, and the Reading Buccaneers Drum and Bugle Corps.

Two major variations on tap dance exist: rhythm ( Jazz ) tap and Broadway tap.

The capital letter A — Two common variations are the usual triangle on legs, which in some artistic drawings lacks the crossbar ( Λ ), and an enlarged version of the " bowl a " (< big ></ big >).

Two of the most popular variations are the Kickflip Indy and Indy Nosebone.

Two variations of demand reduction are commonly cited ; one being access rate, the other diversion.

Two variations of open moulding are Hand Layup and Spray-up.

Two factors common to all savanna environments are rainfall variations from year to year, and dry season wildfires.

Two different variations of electron transport are used during photosynthesis:

Two versions of each card were produced, with variations featuring the same artwork but a different character name denoted by an " a " or " b " letter after the card number.

There are several variations of Cajun dance: a Cajun One Step, also called a Cajun Jig, a Cajun Two Step or related Cajun Jitterbug, and a Cajun Waltz.

Two recent independent theoretical studies have shown that the variations in Schumann resonance power related to the day-night transition are much smaller than those associated with the peaks of the global lightning activity, and therefore the global lightning activity plays a more important role in the variation of the Schumann resonance power.

Two color morphs, a red and a grey phase, were once thought to indicate separate species, rather than variations of the same species.

" Two thermometers can be compared by immersing them both in an insulated vessel of water ( or alcohol, for temperatures below the freezing point of water ) and stirring vigorously to minimize temperature variations.

Two variations known as T568A and T568B overcome this by using adjacent pairs of the outer four pins for the third and fourth pairs.

National and regional variations also occur within the BBC One and BBC Two schedules.

Cajun Two Step is a style of Cajun dancing, also with two variations, and is arguably the most traditional.

Two variations have developed, one enacted at festivals, the other a professional sport.

# In some variations, any five-card combination can be played on top of any other five-card combination with a lower card value, e. g. 4-5-6-7-8 can be played on top of 7-7-7-6-6 even though full house is higher than straight in standard Big Two.

Two main body variations were provided: a five-door hatchback and a four-door notchback.

Two variations were created:

Two distinct generations of the 240SX, the S13 ( 1989 – 1994 ) and the S14 ( which had some minor engine variations to the S13 KA24DE ), were produced based on the Nissan S platform.