▶ Your Answer :
Using a box-shaped device would bring us more benefits
than side-effects someone might worry about.
First, the device is supposed to be used for two years,
during the time young trees grow up to a certain extent. After those two years,
the device is to installed for another young tree, and, in total, we can use a
single device for twenty times. In this sense, the cost of installing device is
not too expensive; we can make use of it reasonably.
Second, the local people, who are to install and
maintain the device, could get reward from it. By using it for other plants
like vegetables, the people are able to secure more food than before; and using
the branches of grown trees as firewood would definitely help the people live
better.
Third, as said above, the device is to used for two
years, during which young trees have their roots reach to the source of water,
and they grow up on their own thereafter. That is why we do not have to make up
a new device for big trees.
|