Why resource conservation is considered as a complex method​

Explanation:

Agriculture, Sustainable

G. Philip Robertson, Richard R. Harwood, in Encyclopedia of Biodiversity (Second Edition), 2013

Resource Conservation

Resource conservation means that those resources on which sustainability depends are conserved and even enhanced by agronomic management. Soil organic matter is a good example of an ecosystem resource that is easily reduced without effective management. Soil organic matter declines rapidly in almost all cropping systems following initial cultivation – typically to 40–60% of original values within a few decades. However, soil organic matter is a valuable resource, providing habitat and energy for soil organisms, a soil structure favorable for plant growth and water retention, and a chemical structure favorable for nutrient retention (Robertson and Grandy, 2006).

my mind is an enigma

heat from the core of the earth causes convection currents to occur in the mantle. these currents slowly move the crust around.