Answers for the scrambled paragraphs are under the exercises:
Fencing is probably one of the oldest games in existence.
_____ (S) Under the Germanic influence the duel spread all over Christendom.
_____ (Q) The Germanic tribes which swarmed over the Empire at the fall of Rome were perhaps the earliest people to recognize combat with swords as a means of settling questions of justice or of vindicating a grievance.
_____ (R) It sprang directly from the duel, and dueling has been extant as long as there has been war.
_____ (T) Even as early as the reign of Charlemagne it was admitted as material proof in the judgments of God.
_____ (U) In the old days there were duels between two persons, and often between two whole armies, depending on the conditions of war.
Prehistoric people would have gazed upon herds of gazelle and other wild animals; gently flowing rivers, which attracted migrating geese and ducks; fruit and nut trees; and rippling fields of wild barley and wild wheat varieties such as emmer and einkorn.
_____ (Q) Indeed, Gobekli Tepe sits at the northern edge of the Fertile Crescent—an arc of mild climate and arable land from the Persian Gulf to present-day Lebanon, Israel, Jordan and Egypt.
_____ (R) "This area was like a paradise," says Schmidt, a member of the German Archaeological Institute.
_____ (S) Such weather and fertile soil would have attracted hunter-gatherers from Africa and the Levant.
_____ (T) This is clearly the earliest "cathedral on a hill" that archeologists have yet to find.
_____ (U) And partly because Schmidt has found no evidence that people permanently resided on the summit of Gobekli Tepe itself, he believes this was a place of worship on an unprecedented scale.
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Water enters the root and is transported up to the leaves through specialized plant cells known as xylem (pronounces zigh-lem).
_____ (Q) Cottonwood trees, for example, will lose 100 gallons of water per hour during hot desert days.
_____ (R) Land plants must guard against drying out (desiccation) and so have evolved specialized structures known as stomata to allow gas to enter and leave the leaf.
_____ (S) Carbon dioxide cannot pass through the protective waxy layer covering the leaf (cuticle), but it can enter the leaf through these openings (the stoma; plural = stomata; Greek for hole) flanked by two guard cells.
_____ (T) Unfortunately for the plant, while these gases are moving between the inside and outside of the leaf, a great deal of water is also lost.
_____ (U) Likewise, oxygen produced during photosynthesis can only pass out of the leaf through the opened stomata.
Answers are down below:
Fencing -----> 4,3,1,5,2 ----> 4= Q, 3=R, 1=S, 5=T, 2=U
Gobekli Tepe -----------> 2,1,3,5,4