answer:20th-century physicians played a significant role in advancing medical knowledge by conducting research, developing new treatments, and applying scientific discoveries in clinical practice.

answer:Smerinthini moths are characterized by having a stout and hairy body, large wings, prominent hindwings, and a hooked forewing tip. They also typically have a unique pattern of stripes and spots on their wings.

answer:The Norwegian monarch's powers include serving as a ceremonial figurehead, signing laws passed by the legislature, appointing key officials, and representing Norway internationally. However, most executive powers are vested in the Prime Minister and the Norwegian government.

answer:The main principles of Zen include living in the present moment, cultivating mindfulness and awareness, practicing meditation, accepting impermanence, and focusing on simplicity. These can be applied in daily life by actively staying mindful and aware, letting go of attachments and distractions, practicing meditation regularly, accepting changes and challenges with equanimity, and simplifying one's life by prioritizing what is truly important.