The process whereby phosphorus is drained away into ground water is called agriculture
decomposition
leaching
sedimentation

When soluble soil nutrients from the soil are washed away due to to effects of rain,floods or irrigation from agricultural practices the process by which this occurs is called LEACHING. As water molecules pass through different soil layers,soluble soil minerals are dissolved and carried by the water  into the ground water.

Phosphorus is a soluble mineral which  is easily carried away by the passing water molecules,and therefore drained from plants' roots.

if these were leached  into rivers and drinking water,this may affect the water supply of the community as the percentage of Phosphorus increases in the water especially if  NPK fertilisers were used.

In addition, some important solid nutrients are also leached into the underground soil layer leading to deficiencies in the plants.

Explanation:

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects