C-02-Q169mediumsingle_mcq
To test toxicity of pond water before stocking fries, what is placed in pond?
To test toxicity of pond water before stocking fries, what is placed in pond?
- aNet
- bSecchi disk
- cHapa with 10-15 fries for 24 hours
- dGlass jar
To test toxicity of pond water before stocking fries, what is placed in pond?