English · Drill 34
English practice 34
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a series of many1 built into2 were told, he have taken great care3 US when possible4 large, heavy5 it6 to ride on a bicycle unfamiliar faces looked at me with curiosity scared me stiff driving over7 equipment, may destroy8
different emotions. A new subdivision of homes 
a once 
plot of land often devastates the natural beauty of the entire area. Many builders, however, will 
to maintain as much of the natural landscape as possible by keeping mature trees untouched 
. Despite this careful attention, construction damage to existing trees can wreak havoc that only appears years after the construction is complete.
equipment used at construction sites, it is easy to understand why 
choose to flatten the land and start over with new plantings. During construction, much of the damage to existing trees occurs beneath the soil, which is why 
often not detected until much later. If 40 percent or more of a root system 
, the tree will probably die.
way beyond the circumference of the tree's canopy. (2) As the bulldozers, dump trucks, and cement trucks 
the soil, they can easily crush the tender roots below. (3) Compacting soil around the vital roots with the heavy 
the tree as well, 58 (4) Roots need air pockets around them in order to stay healthy. (5) Also, by adding fill dirt or topsoil, the roots suddenly become buried.