Which of the following requires that researchers prove harm
before a chemical is restricted or
banned?
A. innocent until guilty principle
B. guilty until proven innocent principle
C. toxicity method
D. hazard principle

d is the answer

Explanation:

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.

c is the answer to this question. altitude affects the weather because air molecules evaporate.