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.
Secondly, the soil mix and feeding are also significant. In order to grow vegetables in containers, you need container mix or bagged potting soil or your own combination of soil. Vegetables typically need loose, well-drained soil with organic matter to grow in containers. Another important factor is watering. When growing vegetables in a container, you must monitor the watering closely since those plants tend to dry out faster than the normal ones which grow in the garden.