A team of archaeologists excavating a sedimentary rock layer come across some primitive hunting tools used by early humans. As the dig progresses, they unearth the fossilized remains of a dinosaur from another layer of the sedimentary rock. Why do these discoveries indicate that the rocks were formed over millions of years? A) Early humans appeared on Earth about a million years ago. B) Humans and dinosaurs coexisted about a million years ago. C) Dinosaurs became extinct millions of years before humans appeared. D) Humans hunted dinosaurs and were responsible for their extinction

Explanation:

C) Dinosaurs became extinct millions of years before humans appeared.

Sedimentary rocks are formed by deposition of inorganic minerals and small particles on the surface of the earth. The layers are formed year after year and hence help in determining the age of the rocks.

Carbon dating has proved that dinosaurs became extinct millions of years before the humans came into existence and so presence of their fossils  in different strata of the same rock indicate that the rocks were formed over millions of year.

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.

you should wear a lead protective shield when having teeth x-rays

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-lavira : )