Tornadoes only form under certain weather conditions. There are three types of airs for a tornado to form, warm humid air close to the ground, cold air in the upper atmosphere, and hot dry air on top that form a cap.(na, 2010) Hurricanes can form tornadoes adding to their destructive power.
Genetically modified crops. Genetically modified crops (GM crops, or biotech crops) are plants used in agriculture, the DNA of which has been modified using genetic engineering techniques. In most cases the aim is to introduce a new trait to the plant which does not occur naturally in the species.
Genetically modified crops are those which have been altered genetically for several reasons. Those reasons might include reducing the maturation time of the plant, increasing nutrients, yields, and stress tolerance, and creating a plant that can withstand diseases, and heavier applications of pesticides and herbicides.he concerns about these genetically modified crops include the potential human health impacts, including cancers, nutritional problems, allergens, and the transfer of antibiotic resistance markers resulting in antibiotic resistant diseases.