Q: A point defect can be an atom missing from a site in the crystal known as a what? Read this paragraph and choose the correct option from the provided answers: 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. Choices: - void - deficiency - vacuum - vacancy A:
vacancy

Q: What happens when materials return to their original shape? Read this paragraph and choose the correct option from the provided answers: Elastic rebound occurs when materials return to their original shape. Choices: - reverberation - second life - restoration principle - elastic rebound A:
elastic rebound

Q: Q: What forms when a solute dissolves in a solvent? Read this paragraph and choose the correct option from the provided answers: A solution forms when a solute dissolves in a solvent. The rate of dissolving is faster with stirring, a higher temperature, or greater surface area. Many solutes are soluble in water because water is polar. Choices: - chemical - gas - liquid - solution A:
A: solution

Question: Q: What is the evolutionary history of a group of related organisms called? Read this paragraph and choose the correct option from the provided answers: Linnaeus classified organisms based on obvious physical traits. Basically, organisms were grouped together if they looked alike. After Darwin published his theory of evolution in the 1800s, scientists looked for a way to classify organisms that showed phylogeny. Phylogeny is the evolutionary history of a group of related organisms. It is represented by a phylogenetic tree , like the one in Figure below . Choices: - lineage - superfamily - ancestry - phylogeny A:
Answer: phylogeny

*Question*
Q: What should a pregnant woman avoid while pregnant? Read this paragraph and choose the correct option from the provided answers: The pregnant mother plays a critical role in the development of the embryo and fetus. She must avoid toxic substances such as alcohol, which can damage the developing offspring. She must also provide all the nutrients and other substances needed for normal growth and development. Most nutrients are needed in greater amounts by a pregnant woman, but some are especially important, including folic acid (vitamin B 9 ), calcium, iron, and omega-3 fatty acids. Choices: - healthy food - vitamins - rest and relaxation - toxic substances A:
**Answer**
toxic substances

(Q).
Q: What are two nonliving things that all living things need for survival? Read this paragraph and choose the correct option from the provided answers: Choices: - sunlight - calcium - methane - water and air A:
(A).
water and air