[Solved] Huston and Melz classified relationships into four types. Which of the following is NOT one of those relationship types? A) tempestuous B) warm C) erotic D) hostile Natural Resources: Materials and components found in nature that can be used for economic gain or necessary for life, such as water, timber, and minerals. Powerful Nations: Countries that possess significant political, economic, and military influence on a global scale. Stratification: The hierarchical arrangement of individuals in a society based on factors like wealth, income, race, education, and power. High Birthrates: A demographic condition where the number of births in a population is significantly higher than the global average.