Hybrid Plants. A hybrid vegetable is created when plant breeders intentionally cross-pollinate two different varieties of a plant.
Transgenic organisms are those that have had their genomes altered by external means. These organisms are found in applications of genetic engineering, but they are only useful if the inserted gene is expressed in the organism.
An example of a transgenic organism may be a rat with the gene for hemoglobin from a rabbit. This rat is only useful if it indeed does produce rabbit hemoglobin in its blood due to the inserted gene.
C is correct. the rest is either about food webs or about both food webs and food chains.
20 is the Number of Neutrons of potassium.