Question

Starter the necessity of crop variety improvement in food production. How can this be executed for the benefit of mankind?

Answer 1

As the population of the world increases, mankind might face shortages of food. That is why an effort is required to make sure that crops are improved in every way, including yield, size, and immunity against crop diseases. 
Improvements such as Genetically modified seeds which can grow all year round in all seasons is one such way of improving crop yield.