Persistent pesticides are those that
require repeated high-dose use for optimum effect.
retain their popularity among u. s. farmers.
do not break down quickly or easily, and therefore become concentrated in organisms high on the food chain.
possess the greatest chemical toxicity.

b, acidosis

acidosis is when the human body attempts to return the bloods ph levels back to normal when the blood is acidic

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.