Answer the following question given this paragraph: The metals of group 13 (Al, Ga, In, and Tl) are all reactive. However, passivation occurs as a tough, hard, thin film of the metal oxide forms upon exposure to air. Disruption of this film may counter the passivation, allowing the metal to react. One way to disrupt the film is to expose the passivated metal to mercury. Some of the metal dissolves in the mercury to form an amalgam, which sheds the protective oxide layer to expose the metal to further reaction. The formation of an amalgam allows the metal to react with air and water. Q: The formation of an amalgam allows the metal to react with what? Choices: - helium and oxygen - cloth and plastic - blood and sweat - air and water A:
air and water
(Question)
Answer the following question given this paragraph: When electrons are removed from an atom, that process requires energy to pull the electron away from the nucleus. Addition of an electron releases energy from the process. Q: What is required when electrons are removed from an atom, and released from the process when an electron is added? Choices: - nuclear - proton - fuel - energy A:
(Answer)
energy
Ques: Answer the following question given this paragraph: In this lesson, you learned that electromagnetic waves are transverse waves. Like other transverse waves, electromagnetic waves have certain properties. Q: What kind of waves are electromagnetic waves? Choices: - amplitude - curved - inverse - transverse A:
Ans: transverse
(Q).
Answer the following question given this paragraph: How do the differences in energy striking different latitudes affect Earth? The planet is much warmer at the equator than at the poles. In the atmosphere, the differences in heat energy cause winds and weather. On the surface, the differences cause ocean currents. Can you explain how?. Q: What does the heat energy affect in the atmosphere? Choices: - gravity and precipitation - erosion and condensation - density and humidity - winds and weather A:
(A).
winds and weather
Ques:Answer the following question given this paragraph: Metatarsal Bones The anterior half of the foot is formed by the five metatarsal bones, which are located between the tarsal bones of the posterior foot and the phalanges of the toes (see Figure 8.19). These elongated bones are numbered 15, starting with the medial side of the foot. The first metatarsal bone is shorter and thicker than the others. The second metatarsal is the longest. The base of the metatarsal bone is the proximal end of each metatarsal bone. These articulate with the cuboid or cuneiform bones. The base of the fifth metatarsal has a large, lateral expansion that provides for muscle attachments. This expanded base of the fifth metatarsal can be felt as a bony bump at the midpoint along the lateral border of the foot. The expanded distal end of each metatarsal is the head of the metatarsal bone. Each metatarsal bone articulates with the proximal phalanx of a toe to form a metatarsophalangeal joint. The heads of the metatarsal bones also rest on the ground and form the ball (anterior end) of the foot. Q: The anterior half of the foot is formed by the five what type of bones? Choices: - malignancy bones - conidia bones - conidia bones - metatarsal bones A:

Ans:metatarsal bones
Answer the following question given this paragraph: Q: Gene duplications that are able to persist over many generations without causing too much harm to an organism or species can lead to what? Choices: - characteristics - parasites - permutations - mutations A:
mutations