(Question)
Q: What is the measure of the amount of energy found in sound waves? Read this paragraph and choose the correct option from the provided answers: A friend whispers to you in class in a voice so soft that you have to lean very close to hear what he's saying. Later that day, your friend shouts to you across the football field. Now his voice is loud enough for you to hear him clearly even though he's many meters away. Obviously, sounds can vary in loudness. Loudness refers to how loud or soft a sound seems to a listener. The loudness of sound is determined, in turn, by the intensity of sound. Intensity is a measure of the amount of energy in sound waves. The unit of intensity is the decibel (dB) . Choices: - decibels - density - frequency - intensity A:
(Answer)
intensity

(Question)
Q: What is it called when pollen from one plant fertilizes another plant of the same species? Read this paragraph and choose the correct option from the provided answers: Pea plants are naturally self-pollinating. In self-pollination , pollen grains from anthers on one plant are transferred to stigmas of flowers on the same plant. Mendel was interested in the offspring of two different parent plants, so he had to prevent self-pollination. He removed the anthers from the flowers of some of the plants in his experiments. Then he pollinated them by hand with pollen from other parent plants of his choice. When pollen from one plant fertilizes another plant of the same species, it is called cross-pollination . The offspring that result from such a cross are called hybrids. Choices: - cross-typing - cross-breeding - cross - vegetation - cross-pollination A:
(Answer)
cross-pollination

(Question)
Q: The anatomy of primate eyes shows they tend to rely more on vision than what sense, which is dominant in many other mammals? Read this paragraph and choose the correct option from the provided answers: Primates usually rely more on the sense of vision rather than the sense of smell, which is the dominant sense in many other mammals. The importance of vision in primates is reflected by the bony socket that surrounds and protects the primate eye. Primates have widely spaced eyes in the same plane that give them stereoscopic (3-D) vision, needed for judging distances. Some primates, including humans, have also evolved color vision. Choices: - taste - touch - hearing - smell A:
(Answer)
smell