ΰΉΰΈΰΈΰΈ²ΰΈ 6.2 ΰΈΰΈ£ΰΈ°ΰΈΰΈ§ΰΈΰΈΰΈ²ΰΈ£ΰΈΰΈΰΈΰΉΰΈΰΈΰΉΰΈΰΈ΄ΰΈΰΈ§ΰΈ΄ΰΈ¨ΰΈ§ΰΈΰΈ£ΰΈ£ΰΈ‘ (ΰΈΰΈ±ΰΈΰΈ«ΰΈ²ΰΉΰΈ₯ΰΈ°ΰΈͺΰΈ²ΰΉΰΈ«ΰΈΰΈΈ) Science 12th grade