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Does anyone know where to get actual answers for the past exams? Because board of studies is gay and doesn't actually give answers

Describe how genes assist in the maintenance of health Well i was stumped... I was gonna guess something about proteins and enzymes...

Analyse the relationship between the position of elements in the Periodic Table, and the acid-base behaviour of their oxides. 4 mark question... and all i could get was that oxides get more acidic going from group 1 to group 7...