Answer:
B) He encouraged his students to question accepted ideas and beliefs.
Brainliest?
Answer: Natural Inorganic solid
Explanation: . A mineral is an inorganic solid that possess a crystalline structure and are formed naturally by geological processes. it has a definite composition and an ordered atomic arrangement.
The study of minerals is called mineralogy. A mineral can be made of single chemical element or more usually a compound. Examples such as quartz
Answer:
D. Hertzsprung-Russell Diagram
Explanation:
The Hertzspring-Russel Diagram or HR-Diagram is used to study the evolution of stars. It plots stars depending on the temperature against luminosity. Stars go through different changes depending on its mass at the beginning. These changes occurs in stages and each stage is marked by a change in temperature and luminosity.