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.
What types of soil do you have? Growing vegetables requires types of soil that are rich in nutrients, easy to dig, holds their shape when moist and crumbles easily when it is ready to be planted. As a gardener it is important to consider what the soil composition is especially when choosing a new garden site. Your vegetable plants need basic nutrients for good plant growth. These need to in the soil and accessible to the plant roots. Soil composition means the proportion of sand, silt, clay and humus in the soil. Four soil types: Sandy soil