c4 c5 c6

people,sometimes,can,measure,a,colourful,zebra's,increasingly,tiny,leg,however,cows, seem,gay

potassium, sodium, calcium, magnesium, aluminium, carbon, zinc, iron, tin, lead, hydrogen, copper, silver, gold

hydroxide = OH ()

Carbonate = CO3 (-2)

Sulphate = SO4 (-2)

Nitrate = NO3 ()

Ammonium = NH4 (+)

combustion, evaporation, decay, photosynthesis , respiration, sedimentation

hydrosphere = mostly H2O

lithosphere = made up of rocks and minerals - O + Si

biosphere = living things - proteins, carbohydrates, + DNA