(Question)
Q: What is the water that falls from the sky called? Read this paragraph and choose the correct option from the provided answers: Clouds are needed for precipitation. Precipitation is water that falls from the sky. This may fall as liquid water, mostly as rain . It may fall also as frozen water, such as snow. Choices: - evaporation - condensation - moisture - precipitation A:
(Answer)
precipitation

(Question)
Q: What do scientists use to study the deep without going to the seafloor? Read this paragraph and choose the correct option from the provided answers: Sending humans to the seafloor is expensive and dangerous. Having to return humans safely to the surface limits what a mission can do. Remotely operated vehicles , or ROVs, allow scientists to study the deep without going to the seafloor. These small vehicles carry cameras and scientific instruments. ROVs were used to study inside the Titanic . This would have been far too dangerous for a manned sub to enter. Scientists control ROVs electronically with sophisticated operating systems. Choices: - drill rigs - telescopes - ultrasound machines - remotely operated vehicles A:
(Answer)
remotely operated vehicles

(Question)
Q: What is the tissue beneath a mollusks' shell called? Read this paragraph and choose the correct option from the provided answers: Mollusks have ventral nerve cords. The tissue beneath the shell is called the mantle. The mantle cavity contains hemolymph. Figure 15.33 Which of the following statements about common features of chordates is true? a. The dorsal hollow nerve cord is part of the chordate central nervous system. In vertebrate fishes, the pharyngeal slits become the gills. Humans are not chordates because humans do not have a tail. Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column. Choices: - cartilage - skin - mucous - mantle A:
(Answer)
mantle