How does radioactive decay help scientists determine the age of the earth?

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.

the correct answer to this question is #5

the growth of the plants is affected by the heat of the light. what is the student doing?