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.
While exact pH requirements for vegetables vary somewhat, in general, the soil in a vegetable garden should fall somewhere be 6 and 7. If your vegetable garden soil tests significantly above that, you will need to lower the pH of the soil.itrogen, Phosphorus and Potassium â When it comes to soil preparation for vegetable garden, these three nutrients are the basic nutrients that all plants need.