Q: The brain and spinal cord are part of what system? Read this paragraph and choose the correct option from the provided answers: The brain and spinal cord make up the central nervous system. Choices: - cardiovascular system - digestive system - immune system - central nervous system A:
central nervous system

Q: What type of weathering breaks rock into smaller pieces? Read this paragraph and choose the correct option from the provided answers: Mechanical weathering breaks rock into smaller pieces. These smaller pieces are just like the bigger rock; they're just smaller! The rock has broken without changing its composition. The smaller pieces have the same minerals in the same proportions. You could use the expression "a chip off the old block" to describe mechanical weathering! The main agents of mechanical weathering are water, ice, and wind. Choices: - fluid weathering - chemical erosion - chemical weathering - mechanical weathering A:
mechanical weathering

Q: Q: What limits the growth or development of an organism, population, or process? Read this paragraph and choose the correct option from the provided answers: In the predator-prey example, one factor limits the growth of the other factor. As the prey population decreases, the predator population begins to decrease as well. The prey population is a limiting factor. A limiting factor limits the growth or development of an organism, population, or process. Choices: - decreasing factor - limiting membrane - mutation factor - limiting factor A:
A: limiting factor

Question: Q: What can bacterial stis be cured with? Read this paragraph and choose the correct option from the provided answers: Most STIs are caused by bacteria or viruses. Several of them are described below. Bacterial STIs can be cured with antibiotics. Viral STIs cannot be cured. Once you are infected with a viral STI, you are likely to be infected for life. Choices: - antioxidants - pesticides - antiviral drugs - antibiotics A:
Answer: antibiotics

*Question*
Q: The outer planets are made of hydrogen and helium, so they are termed what? Read this paragraph and choose the correct option from the provided answers: The outer planets are made of hydrogen and helium, so they are called gas giants. Choices: - hydrogen giants - light giants - helium giants - gas giants A:
**Answer**
gas giants

(Q).
Q: What type of physical properties of a substance do not depend on amount? Read this paragraph and choose the correct option from the provided answers: All matter has physical and chemical properties. Physical properties are characteristics that scientists can measure without changing the composition of the sample under study, such as mass, color, and volume (the amount of space occupied by a sample). Chemical properties describe the characteristic ability of a substance to react to form new substances; they include its flammability and susceptibility to corrosion. All samples of a pure substance have the same chemical and physical properties. For example, pure copper is always a reddish-brown solid (a physical property) and always dissolves in dilute nitric acid to produce a blue solution and a brown gas (a chemical property). Physical properties can be extensive or intensive. Extensive properties vary with the amount of the substance and include mass, weight, and volume. Intensive properties, in contrast, do not depend on the amount of the substance; they include color, melting point, boiling point, electrical conductivity, and physical state at a given temperature. For example, elemental sulfur is a yellow crystalline solid that does not conduct electricity and has a melting point of 115.2C, no matter what amount is examined (Figure 1.12 "The Difference between Extensive and Intensive Properties of Matter"). Scientists commonly measure intensive properties to determine a substance's identity, whereas extensive properties convey information about the amount of the substance in a sample. Figure 1.12 The Difference between Extensive and Intensive Properties of Matter. Choices: - inherent - extensive - stable - intensive A:
(A).
intensive