Science [3 Mark Questions]

How is ozone molecule formed ? what is the main reason of depletion of ozone layer ? 

What is biological magnification ? Will the levels of this magnification be different at different level of the ecosystem ? 

What is ecosystem ? write components of ecosystem. 

What is nutrition ? Explain Heterotrophic Nutrition. 

Differentiate between - Autotrophic Nutrition and Heterotrophic Nutrition. 

What are Aerobic and Anaerobic respiration ? Explain the process. 

What are Electrolytic decomposition and photolytic. 

What are Exothermic and Endothermic reaction ? Give examples. 

What is redox reaction ? Explain with examples. 

Explain Corrosion and rancidity with the help of examples.