Ineed ! which number is main idea? i need 1. (1) new technology often creates unanticipated problems. (2) automobiles, for example, provide numerous benefits, but they also pollute the air and kill about fifty thousand americans each year. (3) it is difficult to imagine life without electricity, but the generation of electricity pollutes the air and causes the thermal pollution of rivers. (4) insecticides and chemical fertilizers have performed miracles in agriculture but have polluted food and streams (and even “killed” some lakes). (5) jet planes, while us in many ways, cause air pollution (one jet taking off emits the same amount of hydrocarbon as the exhausts from ten thousand automobiles) and noise pollution near busy airports.

Analyze the foot of the following word. use a dictionary if necessary. advise iambic trochaic

What do mcmahon’s references to thomas carlyle and john stuart mill do for his own image and credibility?

Arrange the sentences below to form a logical paragraph.an experienced rock climber knows that it takes a combination of knowledge and preparation to perform a successful climb.a successful climb begins with a proper foothold, carefully placing each foot on a ledge or crack then reaching for a solid hold, and finally pushing off.in addition to a proper foothold, a climber must be careful to check the integrity of the rock before stepping because it has to be solid clear through.a veteran climber judges the integrity of the rock and chooses not to climb on conglomerates, packed clay with lots of little rocks.but, such knowledge of rock is not the only preparation a skilled climber needs; equally important is the correct equipment.with these tools, knowledge of rock composition and equipment safety, a climber may experience many safe and enjoyable climbs.