Just had a delivery to the GA.A box of resources for the OPAL WATER SURVEY
Last year it was the AIR SURVEY...
Free for schools to register and participate...
Look forward to having a go.
Just had a delivery to the GA.Just had a delivery to the GA.Just had a delivery to the GA.
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I've found that the pH test (very quick) does show a nice difference between rain-fed and groundwater-fed ponds. And pond dipping (although not all that geographical) is always quite absorbing!