Amphibians have been able to maintain a specific level of hydration in and out of water ever since they developed neurohypophysial hormones which adjusted the permeability of their skin.

Sigmund Freud, considered by some the father of modern psychology, developed his theory of psychoanalysis by establishing a conception of the human subconscious and he applied that idea to the interpretation of dreams.

In August 2013, India was the first nation on record to declare dolphins to be non-human persons with their own rights and ban the capture and import of them for the purpose of commercial entertainment.

Despite its being soft enough to grow, a newborn human has a skull that is not an unbroken casing with "soft spots," rather it is a series of body plates joined together by anatomical lines known as sutures.

A study concludes that the Indus civilization, which existed 6,000 years ago, experienced violence and disease of such severity they eroded the ability of the population to stay in their cities and, the result is, to remain intact as a civilization.

A nuclear test explosion was detonated recently in the Pacific Ocean, creating a substantial blast with a yield of 7.3 kilotons, or magnitude 5.1 on the Richter scale if it had been measured as an earthquake.

Panama seceded from Colombia in 1903, except for Panama constructing a canal, the two countries continued on similar courses for the next decade.

Although the candidate's approval rating is at an all-time low, his remarks aired in tonight's press conference seem like it is suggestive that his bid for reelection, previously thought improbable, is all but inevitable.

The analysis recommended that management should upgrade security cameras, improve fire equipment, and increase the presence of security guards.

In a "smart" home, security systems, heating units, televisions, and washing machines are all networked, and the homeowner can send commands by phone to each appliance, which thereby activates or deactivates that unit as desired.

Offering a suite of similar products at dissimilar prices is critical to ongoing profitability for the automotive industry, like in other industries.

Toward the end of that year, the food and beverage entrepreneur was looking for a partner - someone not only who could provide expertise in developing talent pipelines, but sharing his passion as well to launch a new product on the market.

Citing hard-to-predict sudden changes to the Earth's environment, a panel of advisors has urged the nation to implement an early warning system, conduct further research of threats, and building a capability to respond to these disruptions.

Luisa has  more children than Jenna has, and together they have a total of  children. Which of the following represents the number of children that Jenna has?

It would take one machine 7 hours to complete a large production order and another machine 5 hours to complete the same order. If they can work on the order simultaneously without interfering with each other, how many hours would it take both machines, working simultaneously at their respective constant rates, to complete the order?

The people at a workshop are from the countries England, France, and Japan in the ratio , respectively. If  total people are at the workshop, how many more people are from England than from Japan?

Cyclist  averages 19.9 miles per hour and Cyclist  averages 15.1 miles per hour. If each cycle rides 1,500 miles, approximately how many more hours will Cyclist  ride than Cyclist ?

The passage suggests which of the following about the research performed by Gary Klein?

The author suggests that which of the following is an evolutionary disadvantage of the prominence of cartilage in fish?

Elaina and Fernanda each separately received an annual bonus, paid using only $50 denominations. What is the total amount of their bonuses?

1. Elaina's bonus was 50 percent greater than Fernanda's.
2. The sum of bonuses of Elaina and Fernanda was between $2,100 and $2,800.