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.
A Few General Rules for Selecting Container Gardening Vegetables. Some vegetables, like leafy greens, are ideally suited to growing in containers. Lettuce can thrive in as little as 3â of soil, in a rich organic container garden soil. It will do slightly better in 6â (15cm) of potting soil, but thereâs little difference between lettuce plants grown in 6â (15cm) of soil and lettuces grown in 24â (60cm) of soil.