🌍📉3️⃣5️⃣0️⃣

#350ppm #climate change #co2 level #350org #climate action #parts per million

🔬➡️1Ⓜ️

#parts per million #ppm #ratio #micro #million

🤏/✨

#parts per million #ppm #ratio #proportion #tiny amount #trace quantity #small part #large whole

1️⃣💧/🌊

#parts per million #dilution #ratio #proportion #one in a million #trace amount #water quality

1/10⁶

#parts per million #ppm #fraction #ratio #scientific notation #proportion

🧪📉

#parts per million #ppm #low concentration #detection limit #trace analysis