While in reality Alpha Centauri is a triple star,--------to the naked eye to be a single star.

Case studies are the target of much skepticism in the scientific commuity, ________ used extensively by numerous researchers.

________ show the relations among neurons, they do not preclude the possibility that other aspects are important.

Like Thomas Berger's fictional character "Little Big Man", Lauderdale managed to find himself where __________ of important events took place.

___________ or refinanced, the lender will generally require setting up an escrow account to ensure the payment of property taxes and homeowner's insurance

The president of the U.S. appoints the cabinet members, _____________ appointments are subject to Senate approval.

The three basic chords in _____ the tonic, the dominant, and the subdominant.

Among human chromosomes, the Y chromosome is unusual_____ most of the chromosome does not participate in meiotic recombination.

Each object ___________ Jupiter's magnetic field is deluged with electrical charges.

The prisioners were prevented from speaking to reporters because __________.

If ultraviolet radiation enters the Earth's atmosphere, ______________ generally blocked by the ozone concentrated in the atmosphere.

According to the hypothesis in the study, the monarchs pick up magnetic field of the ________ migrate by following magnetic fields.

As its name suggests, the Prairie Wetlands Resource Center_____ the protection of wetlands on the prairies of the Dakotas, Montana, Minnesota, and Nebraska.