FREQUENTLY TESTED QUESTIONS WITH
VERIFIED SOLUTIONS GRADED A+
◉ Water stress. Answer: Difficulty obtaining sources of fresh water
for use during a period of time.
◉ Water crisis. Answer: A situation where available potable
unpolluted water within a region is less than that regions demand.
◉ Physical scarcity. Answer: Inadequate natural water to meet a
regions demand.
◉ Aquifer. Answer: Natural underground formation where mineral
bearing water is stored.
◉ Contaminated site. Answer: A site where hazardous substances
occur at concentrations above background levels and where
assessment indicates it poses or is likely to pose an immediate or
long term hazard to human health or the environment. e.g. old sheep
dips, pesticide dumping grounds, old market gardens.
, ◉ Wastewater. Answer: Spent or used water which contains
dissolved or suspended solids. Typically 99% water and 1% solids.
◉ Turbidity. Answer: The measure of relative clarity of a liquid. It is
an optical characteristic of water and is an expression of the amount
of light that is scattered by material in the water when a light is
shined through the water sample. The higher the intensity of
scattered light the higher the turbidity.
◉ Anoxic. Answer: In the absence of oxygen
◉ Anaerobic. Answer: Reactions that occur in the absence of oxygen
◉ Intensive farming. Answer: Increase of inputs (fertiliser, irrigation,
human capital) to increase production. Characterised by greater
environmental degradation.
◉ Nitrogen. Answer: most abundant element in the atmosphere
◉ Nitrogen cycle. Answer:
◉ Water cycle. Answer:
◉ Waste treatment. Answer: