Water is needed to sustain practically all life functions on planet Earth. A single drop of this compound is composed of an oxygen atom that shares its electrons with each of the two hydrogen atoms. The cycle starts when precipitation, such as rain, snow, sleet, or hail, descends from the sky onto the ground. Water that is not absorbed immediately from the precipitation is known as runoff. The runoff flows across the land and collects in groundwater reservoirs, rivers, streams, and oceans. Evaporation takes place when liquid water changes into water vapor, which is a gas. Water vapor returns to the air from surface water and plants. Ultimately, condensation happens when this water vapor cools and changes back into droplets of liquid. In fact, the puffy, cotton clouds that we observe are formed by condensation. When the clouds become heavily laden with liquid droplets, precipitation ensues.

Which transitional expression best replaces the underlined word in the following sentence: "Ultimately, condensation happens when water vapor cools."

Golden Gate Bridge
 

Linking San Francisco to Marin County in California, the Golden Gate Bridge is one of the most
famous bridges in the world. The bridge crosses over a narrow strait which connects the Pacific
Ocean to San Francisco Bay. Prior to the bridge, people traveled by ferry boat across the strait.
Although most people thought a bridge was necessary to expedite travel, some residents of the
bay area felt the risk of building the bridge was too great. Joseph Strauss believed that nothing
was impossible, and dreams would never come to fruition if risks weren't taken. So, he decided
to gather the best and brightest builders, architects, and workers to embark on the challenge of
building a bridge across the Golden Gate Strait. With safety nets in place, the construction began in 1937. Building the anchorages first, the builders then move on to the towers on each end, and then to the three-foot thick cables to support the suspension bridge. Lastly, workers labored to complete the roadway which became the most dangerous and treacherous part of the entire task. The builders had to keep the bridge balance, so it wouldn't fall into the bay.

 Today, over sixty-five years later, the bridge remains a lifeline for the people of the San
Francisco Bay Area.

What body of water does The Golden Gate Bridge cross?

Getting a Good Night's Sleep  

Have you ever found yourself staring at the ceiling at 2:00 a.m.? Have you kicked the blankets off to the floor from tossing and turning? Many longtime suffers of Insomnia know these situations all too well. As many as 17% of Americans find the restful break of sleep hard to achieve.

Lack of sleep affects intellectual abilities at work or school by causing a deficit in memory, attention, and concentration which in turn creates a feeling of irritation or depression. Chronic insomnia can result from a medical illness, a psychiatric condition, or from sleep apnea, a condition where an individual actually stops breathing during sleep. Sleep hygiene, developing good sleep habits, and non- pharmacological therapies such as herbs and spices are some solutions to Insomnia.

Sleep apnea causes

What effect does your voice have on others? Does it persuade or irritate, attract or repel? One of the worst qualities is harshness. If you ever get the feeling that people are uncomfortable when
you speak, it may be that your harsh tones are jarring their eardrums. Your voice will sound unpleasant if it is shrill, grating, hard, piercing, brassy, to loud, or too nasal. Harsh voice qualities usually come from too much tension in the throat and jaw. Tension tightens muscles
and blocks the relaxed voice tones essential to a pleasing impression. Because tension occurs in higher pitched voices, women tend to have shriller voices than men, which usually makes them less desirable public speakers, newscasters, or political candidates.

The author seems to

Consumption of food is a universal necessity. Different cultures have developed different methods to accomplish the task. It is interesting to discover these differences and learn new ways to do things. European cultures developed cutlery (knives, forks, and spoons) to enable people to efficiently eat their food. Correct use of this tool's changes with the times-what was polite in 1800 may not be considered proper manners today. China developed the chopstick as an efficient tool for eating. Mastery of the use of chopsticks can be difficult for the person not raised in the culture. The attempts of a novice to use chopsticks can be very amusing to the watcher, but frustrating for the hungry diner. Space travel has created new challenges for consuming food. Squeeze bottles and other unique packaging have enabled space travelers to get their needed nutrition. Chopsticks and forks do not work well in space.

What statement from the article draws a conclusion?