Going on a bushwalk in your backyard and don’t want to get lost? Be sure to pack a balloon, a magnet and a bucket of water.
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Surface water and groundwater are connected within a system, rather than being isolated.
Fresnel lenses bend light to make objects appear larger or smaller.
Queensland tour was an amazing four weeks in which I drove over 5,000km.
The trigonometry function of 'tan' can be used to find the distance to a target.
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