Answer the following question given this paragraph: Summary Real crystals contain large numbers of defects. Defects may affect only a single point in the lattice (a point defect), a row of lattice points (a line defect), or a plane of atoms (a plane defect). A point defect can be an atom missing from a site in the crystal (a vacancy) or an impurity atom that occupies. Q: A point defect can be an atom missing from a site in the crystal known as a what? Choices: - void - deficiency - vacuum - vacancy A:
vacancy
(Question)
Answer the following question given this paragraph: Viewed through a telescope, Venus looks smooth and featureless. The planet is covered by a thick layer of clouds. You can see the clouds in pictures of Venus ( Figure below ). Q: What is venus covered in a thick layer of? Choices: - storms - fog - gases - clouds A:
(Answer)
clouds
Ques: Answer the following question given this paragraph: The immune system is the body system that fights to protect the body from specific pathogens. The immune system's specific reaction to a pathogen is called an immune response. The immune system includes several organs and a system of vessels that carry lymph. Q: What is the name of the body system that fights to protect the body from specific pathogens? Choices: - allergic response - warning system - infectious system - immune system A:
Ans: immune system
(Q).
Answer the following question given this paragraph: A fleshy bead of tissue called the uvula drops down from the center of the posterior edge of the soft palate. Although some have suggested that the uvula is a vestigial organ, it serves an important purpose. When you swallow, the soft palate and uvula move upward, helping to keep foods and liquid from entering the nasal cavity. Unfortunately, it can also contribute to the sound produced by snoring. Two muscular folds extend downward from the soft palate, on either side of the uvula. Toward the front, the palatoglossal arch lies next to the base of the tongue; behind it, the palatopharyngeal arch forms the superior and lateral margins of the fauces. Between these two arches are the palatine tonsils, clusters of lymphoid tissue that protect the pharynx. The lingual tonsils are located at the base of the tongue. Q: Although some have suggested that the uvula is what type of organ, it actually serves an important purpose? Choices: - essential - parietal - remnant - vestigial A:
(A).
vestigial
Ques:Answer the following question given this paragraph: Primate ancestors also mainly ate fruit. They needed to be able to spot colored fruits in the leafy background of the trees ( Figure below ). They also had to be able to judge which fruits were ripe and which were still green. Ripe fruits are usually red, orange, yellow, or purple. Being able to see in color was important for finding food. It was an adaptation that would help fruit-eating primates survive. Q: Ripe fruits are usually red, orange, yellow, or what? Choices: - white - blue - black - purple A:

Ans:purple
Ques:Answer the following question given this paragraph: Metals are elements that can conduct electricity. They are one of three classes of elements (the other two classes are nonmetals and metalloids). Metals are by far the largest of the three classes. In fact, most elements are metals. All of the elements on the left side and in the middle of the periodic table, except for hydrogen, are metals. There are several different types of metals, including alkali metals in group 1 of the periodic table, alkaline Earth metals in group 2, and transition metals in groups 312. The majority of metals are transition metals. Q: The three classes of elements are metals, nonmetals, and what? Choices: - ionic compounds - molecules - atoms - metalloids A:

Ans:
metalloids