arapaima fish

arowana fischPlease help me choose which one is better

  Mine is a 50-cylinder made of rhododendron roots last night. Several trees are at a height of 30 centimeters. I want to combine a wood and lay for a long time. It does nt feel like a tree. I d...

Antibiotic sterilizes quickly but it needs to be used with caution

  Bactericides can kill bacteria; antibiotics can prevent bacterial growth.Bactericides have different degrees of toxicity to the human body because of their different concentrations, so they ca...