A biological hazard is one originating from an organism that is foreign (in presence or concentration) to the organism being affected. Many biological hazards are associated with food, including certain viruses, parasites, fungi, bacteria, and plant and seafood toxins.hree people crossing the Atlantic in a rowboat face a hazard of drowning... Three hundred people crossing the Atlantic in an ocean liner face the same hazard of drowning... The risk to each individual per crossing is given by the probability of the occurrence of an accident in which he or she drowns...
The best soil mix for your container-grown vegetables is one that is well-drained, well-aerated and has a pH that is close to neutral. Soil-containing or soilless potting mixes offer all of these features.
For growing gardenias in pots, choose quality potting soil that is light, well-drained and rich in organic matter. You can also use gritty mix soil for it. Clay-rich, water retaining soil must be avoided. Soil must be acidic and pH level around 4.8 â 6 is ideal.