Answer:
erosion
Explanation:
the process by which soil and rock particles are worn away and moved elsewhere by gravity, or by a moving transport agent; wind, water or ice.
A subject participates in a drug study because treatment is available at no or reduced cost, and he could not otherwise afford it. This is an example of economic vulnerability. It <span> is defined as the exposure of an </span>economy<span> to exogenous shocks, arising out of </span>economic<span> openness.</span>
