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What are Kerley A lines

Kerley A lines are linear opacities extending from the periphery to the hila caused by distention of anastomotic channels between peripheral and central

Mar 30, 2026 1 Views
science

Is Sage a herb or spice

Sage is a staple herb in various cuisines around the world. Its other names include common sage, garden sage and Salvia officinalis. It belongs to the mint

Mar 30, 2026 2 Views
science

Who invented the compass

Historians think China may have been the first civilization to develop a magnetic compass that could be used for navigation. Chinese scientists may have

Mar 30, 2026 2 Views
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