HORTICULTURE

Detailed explanation-1: -Nanoparticles can get into the body through the skin, lungs and digestive system. This may help create ‘free radicals’ which can cause cell damage and damage to the DNA. There is also concern that once nanoparticles are in the bloodstream they will be able to cross the blood-brain barrier.

Detailed explanation-2: -Currently nanotechnology plays a vital role in water purification techniques. Nanotechnology is the process of manipulating atoms on a nanoscale. In nanotechnology, nano membranes are used with the purpose of softening the water and removal of contaminants such as physical, biological and chemical contaminants.

Detailed explanation-3: -Sunscreens and fuel cells are not an application of Nano-materials.

Detailed explanation-4: -Hazards and risks of nanoparticles include increased production of ROS, DNA damage, genotoxic effects, damages to organs and tissues in humans, effects on growth and yield of crop plants and negative impacts on beneficial bacteria in the environment.