Answer the following question given this paragraph: Curvatures of the Vertebral Column The adult vertebral column does not form a straight line, but instead has four curvatures along its length (see Figure 7.20). These curves increase the vertebral column's strength, flexibility, and ability to absorb shock. When the load on the spine is increased, by carrying a heavy backpack for example, the curvatures increase in depth (become more curved) to accommodate the extra weight. They then spring back when the weight is removed. The four adult curvatures are classified as either primary or secondary curvatures. Primary curves are retained from the original fetal curvature, while secondary curvatures develop after birth. Q: What feature of the spine helps with flexibility and strength? Choices: - shape - angle - arrangement - curves A:
curves
Answer the following question given this paragraph: The endocrine system consists of glands that secrete hormones into the bloodstream. Q: What system consists of glands that secrete hormones into the bloodstream? Choices: - Respiratory system - nervous system - Muscular system - the endocrine system A:
the endocrine system
Q: Answer the following question given this paragraph: All matter is composed of extremely small particles called atoms. Q: What are the extremely small particles that comprise all matter? Choices: - ions - protons - electrons - atoms A:
A: atoms
Question: Answer the following question given this paragraph: Sweating regulates body temperature. The composition of the sweat determines whether body odor is a byproduct of sweating. Visit this link (http://openstaxcollege. org/l/sweating) to learn more about sweating and body odor. Q: What is the beneficial function to the body of sweating? Choices: - pheromone release - diuretic effect - calorie loss - regulating body temperature A:
Answer: regulating body temperature
*Question*
Answer the following question given this paragraph: Combustion reactions involve the reaction of a hydrocarbon with oxygen gas to produce water and carbon dioxide. Q: What involves the reaction of a hydrocarbon with oxygen gas to produce water and carbon dioxide? Choices: - hydrogen reactions - chemical reactions - material reactions - combustion reactions A:
**Answer**
combustion reactions
Q: Answer the following question given this paragraph: Iron is oxidized to Fe2+(aq) at an anodic site on the surface of the iron, which is often an impurity or a lattice defect. Oxygen is reduced to water at a different site on the surface of the iron, which acts as the cathode. Electrons are transferred from the anode to the cathode through the electrically conductive metal. Water is a solvent for the Fe2+ that is produced initially and acts as a salt bridge. Rust (Fe2O3xH2O) is formed by the subsequent oxidation of Fe2+ by atmospheric oxygen. In the corrosion process, iron metal acts as the anode in a galvanic cell and is oxidized to Fe2+; oxygen is reduced to water at the cathode. The relevant reactions are as follows:. Q: Iron is oxidized to fe2+(aq) at an anodic site on the surface of the iron, which is often an impurity or this? Choices: - displacement defect - spontaneous mutation - ladder complex - lattice defect A:
A: lattice defect