Despite mechanization, why does dairy farming remain labor intensive? Cows must be milked several times a day. Products must be
sold and transported immediately. Operations require constant attention. Output expectations continue to rise. Growing crops for feed requires a large number of workers.
Growing crops for feed requires a large number of workers
Explanation:
The dairy farming has been modernized and in it lot of mechanization has been included. While this makes the dairy farming much easier, there are still things in it that require lot of labor force, still making it a labor intensive farming type. In order to feed the cattle, lot of food is required, and for large areas are planted with several types of crops. Those crops need work, be it for their growth, harvesting, sorting out, or feeding the cattle, thus lot of laborers are required for that to be achieved.
The Earth is a "closed system" which means that the amount of rocks, carbon, metals, nitrogen, water and oxygen on earth remains constant.
So it is essential that "biogeochemical cycles renew these materials" as they move through the Earth's subsystems.
<u>Explanation</u>:
The Earth's only source of extra-planetary energy is the Solar radiations received by Earth.
The biogeochemical cycles on the planet are responsible for processing the same old rocks, metals, carbon, nitrogen, oxygen, water, and other abiotic substances on Earth in order to naturally renew them and make them available for reuse.
No naturally occurring element on Earth is newly produced. It is only renewed through biogeochemical processes.
