Multiply the number of each element by its mass on the periodic table.
Add them together.
Put the mass of carbon only over the total mass and multiply the result by 100 to get the percentage.
One of them oxygen or chlorine, the reason is that from the left to the right the electronegativity increases as well from the bottom to the top it increases as well :)) so the chlorine and oxygen is near each other so i cant decide cuz im not sure ☹️☹️
Answer:
Its enviormental science because enviormental science is an interdisciplinary academic field that integrates physical.