Answer to Question 1
The Miller-Urey experiments involved passing an electrical charge (lightning) through a primordial soup of chemicals believed to be similar to those which existed on early Earth. The result was the same simple amino acids found today in all living things on Earth.
Answer to Question 2
Life must be able to react, grow, reproduce, and evolve. However, these rules are not hard and fast; things that are not alive, such as stars, may satisfy several of these requirements. Viruses do most of these things but are not generally considered to be alive either.
The patient and his family meet with the nurse to discuss progress on the patient care plan.
Allen Test: An occluded ulnar artery results in continued pallor of the hand while the radial artery
Results of the study by Laruelle et al. (1996)
Reduced mobility in late adulthood often results in more limited activities and smaller social ...
3-month-old baby in one of Rovee-Collier's memory experiments
The Nature and Properties of Soils, 15th Edition Cover