Which of the characteristics listed below represents Plains Indians in eastern Oklahoma? i. simple trading systems ii. farming communities iii. long-distance trade networks A. i only B. i and ii only C. ii and iii only D. i, ii, and iii

a sample of water is taken and kept in a beaker in a freezer at a constant temperature of 0°c. if the system is at dynamic equilibrium, which of these statements is true?  

i think i will need more detail to answer if this is a specific question on a test, but technology advancements are good for many industries, such as medicine or food industries, new technology could us in medicine in ways such as new scanners to tell us more about our bodies or new cures or vaccines for diseases.