Define stress and strain. What are their different types?

What are the different types of muscles?

What are the different types of Plastids?

What are the different types of disasters ?

Define fermentation. What are the different types of fermentation?

What are the different types of antibiotics ?

What are different types of Energy?

What are different types of Energy?

Define wavefront, wavenormal and a ray of light. What are the different types of wavefronts? How are they produced ?

Define strain.