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Expert decision-makers may rely on intuition and mental simulation, according to the ______ model.

Which of the following is true about minerals per geologic definition? 

Why might a single mineral (like pyrite) have several different crystal habits?   

Suppose that the population growth rate is . A natural disaster destroys a large portion of a country’s capital stock. If the saving and depreciation rates are unchanged, the Solow model predicts that the economy will ________ and eventually reach ________

Suppose we compare GDP per person in Botswana and the United States in two ways: first using the nominal exchange rate and then again using the relative price-based conversion. The GDP per person in Botswana calculated using the exchange rate method is $500 while that calculated using the relative price-based conversion is $1,000. What is the relative price ratio between Botswana and the U.S. (i.e., the price level for Botswana relative to the United States)?  Round your answer to the nearest hundredth.

Suppose that nominal (and real) GDP in the United States was $800 in the year 1900. Assume that the US nominal GDP grows at a constant rate of 4.5% and the inflation rate is 3.0% per year (every year). Using the constant growth rule from equation (3.7) in the textbook plus the fact that

Compute this economy’s GDP per capita in the long run. Round your answer to the nearest tenth.

Durin, the Dwarven prince of Khazad-dum, takes a different approach. Rather than depriving his Dwarves of dessert, he relies on an improved technology to produce weapons and armor: the discovery of mithril, a metal that is both lighter and stronger than conventional steel. Mithril is used for consumption (in the form of weapons and armor) and investment (in the form of tools and machines). You can think of the introduction of mithril as a technological improvement: . Assuming that the population of Dwarves is constant over time, describe the impact of this technological improvement on: the total stock of tools and machines (i.e., capital) in the long run [1 point], the production of weapons and armor (consumption) and tools and machines (investment) per Dwarf, also in the long run [1 points], and the growth rate of tools and machines (capital) per Dwarf in the short run (i.e., at the exact time when the new technology is introduced to the Dwarf economy) [0.5 points].

(2) Aging is associated with both calcium resorption from bone and calcium accretion within the vasculature.  Despite this intriguing correlation between bone mineral density and vascular calcification, a direct biological link has been minimized because osteoporosis and vascular calcification were considered non-modifiable, passive consequences of ageing. However, recent data now suggest that this association is not simply an artifact of age and that pathological and nutritional factors may overlap the relationship between arteriosclerosis and osteoporosis.  Provide support for a hypothesis that suggests both vitamins D and K can increase the mineralization process in bone and concomitantly decrease the mineralization process in vascular tissue.

(5) The Dietary Guidelines for Americans (DGAs) are updated every five years, with the next update scheduled for 2025. The current DGAs there is no recommendation related to consumption of ultra-processed foods. Would you recommend this is added to the DGAs in 2025? Why or why not?  In writing your response, consider the debate recently highlighted in the American Journal of Clinical Nutrition.  Does the concept of ultra-processed foods inform dietary guidelines?