Question

QUESTION 38

1. With regard to the ability of humans to grow very large crop yields to feed very large populations, what innovation had the biggest effect?

   		domestication of large animals
   		cross breeding of different strains of cereal grains and rice to increase yields
   		The Haber-Bosch process (artificial nitrogen fixation)
   		crop irrigation

10 points   

QUESTION 39

1. From an economics and conservation perspective, how does being a vegetarian benefit the biosphere?

   	1.	energy efficiency
   	2.	increased biodiversity
   	3.	increased health and lifespan of the consumer
   	4.	it is a strictly ethical consideration: eating animals is not ethical

Answer 1

Answer:

38.(a) domestication of large animals

The practice of domestication of large animals like cattle, goats ,sheeps provided large amount of proteins at need of the hour without any problems. It also provided many items like milk products, fabrics etc as secondary products. So domestication was a huge step for feeding very large population.

39. (a)

All the reasons given here are more or less beneficial to the biosphere if people go vegetarian. Energy efficiency is the most important factor of being vegetarian. When we eat animals, most of the energy present in their body are already lost as heat and only a small fraction of it reaches us. However if we eat plants , we will get more energy from the same amount of food. It means more population can be feed with minimum space being vegetarian. Moreover as we know energy becomes less and less whenever we go to top of the food chain(10% law), we must eat producers for maximum energy.

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