Scientists were able to determine the age of the earth from rock samples that were analyzed.

what technique was used to do this?

a.
fossil records < thats what i think

b.
radiometric dating

c.
extinction

d.
geologic time scale

 B.  radiometric dating

Radiometric dating is an aging process which is used to age rocks and other objects associated with them. This is based upon the decay process of radioactive isotopes present in the rocks. The radioactive decay is the process in which an unstable  nucleus loses it's energy in the form of emerging radiation. The age of the typical rock is determined by the half life of the decayed products.

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.

can you give me more to work here with plzs and you