Which of the following expresses the main point of this passage?

Which of the following best defines the word dominant as it is used in paragraph 2 of the selection?

According to information in the passage, what happens to the wolf population in a region at high pack density?

The main idea of paragraph 2 is that

Long thought to be a case of mistaken identity, the discovery of the Bornean rainbow toad by European explorers in 1924 was recently verified by scientists. The explorers had made a black-and-white sketch of an unusual toad they had found in the jungles of Southeast Asia, christening it the Bornean rainbow toad. Skeptical but curious, scientists recently went to look for the toad— and ended up finding three specimens.

The passage implies which of the following about the Bornean rainbow toad?

Television has been the primary source of information and entertainment for most Americans over the last 50 years. However, with Internet use on the rise year after year, some may wonder if surfing the net will soon surpass watching television as Americans' primary leisure activity. Indeed, some recent surveys show that time spent on the Internet is now greater than time spent in front of the television. However, this statistic may not tell the whole story, as 59% of Americans say they multitask, using the Internet and watching TV simultaneously.

The main idea of the passage is that television:

Plywood, while not the most pleasing wood to look at, has become an incredibly important building material in house construction. It is flexible, inexpensive, and strong. Its strength is due to layers of thin wood glued on top of each other with the grain of each layer making a right angle with the grain of the layer below it. This way of layering the sheets of wood makes plywood difficult to break. According to the passage, the arrangement of the layers of thin wood explains plywood's:

The 1922 German Expressionist film Nosferatu, directed by F. W. Murnau, is considered one of the most influential films in cinematic history—while also being a classic vampire movie. The film is closely based on Bram Stoker's 1897 novel, Dracula; however, the villain in the film is called "Count Orlok" rather than "Count Dracula." The reason is that the small studio that produced the film, Prana Film, was unable to secure the rights to Stoker's novel. In fact, shortly after finishing Nosferatu, its one and only film, Prana went bankrupt in order to dodge copyright lawsuits from Stoker's widow.

Why does the author say that the vampire in Nosferatu is named "Count Orlok" and not "Count Dracula"?

Guillermo Gonzalez Camarena became a successful inventor at an early age. By the age of seven, he had constructed a variety of electronically-propelled toys to play with; he later designed and built his own amateur radio and a functioning telescope. In 1940, when he was only 23, Camarena obtained the world's first patent for color television. Camarena's early color television transmission system was the first one to be approved by the U.S. Federal Communications Commission. Other color-television technologies came after Camarena's patented invention, but his system is still used by a number of scientists today. In sentence 2, the word "functioning" most nearly means:

In this selection, the author's main purpose is to