The sentence which describes a cause-and-effect structure is the following: "Working on a wind turbine can involve hazards, such as falls, fires, or fatigue." (D).
A sentence containing a cause-and-effect structure means that you should have, in 1 sentence:
- an element being the reason for something to happen (the <em>cause</em>),
- an element being the consequence of it (the <em>effect</em>).
Here, the fact that people are working on wind turbines is the cause, because it leads to possible consequences: they can fall, trigger fires, or become fatigued (these are the effects).
The cold war was not a physical war, but more of a political war. No fighting, shooting, or bombing happened during the "war". Instead, it was a war of politics and threats. The U.S. and the U.S.S.R. were constantly at the brink of full nuclear war, if one country fired all their nukes, the other would do the same shorty, leaving both countries demolished within minutes of each other. Other things that happened during this time were the "red scare," which was a fear of communists coming into America and America's politics and the space race, seeing which country would not only send mechanics into space but men as well.
It practiced ruthless business techniques, it dominated the oil market, and it controls the transportation of oil
The Greek did not build pyramids similarly to the other three civilizations.