ECZ 2021 sci paper 1 gce question B7

[@joshuamwansa2914]

Wow this is amazing ,keep it up sir😇😇

[@EricsonSakala-h4d]

Well explained

[@lynettechipwende557]

Well explained thank you so much Sir 🙏

[@lynettechipwende557]

Good evening Sir.. I just want to say thank you for the videos you were posting I learnt alot and I passed my Exams with a 3 in science and math 3 also 💪💪💪💪🙌God bless you sir

[@lovemoremambwe3426]

Sir I understood thank you 🙏

[@MulengaAckson-vh5jq]

I can't see your handwriting please sir

[@francisngoma6757]

Sorry for that