|
By applying which of the following practices, contamination of hydroponics plants can be reduced? |
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|
a) |
Change the medium every week |
b) |
Do not use tools from the outdoor garden |
|
c) |
Complete aeration in hydroponic tank |
d) |
All of the above |
|
By applying which of the following practices, contamination of hydroponics plants can be reduced? |
|||
|
a) |
Change the medium every week |
b) |
Do not use tools from the outdoor garden |
|
c) |
Complete aeration in hydroponic tank |
d) |
All of the above |