Alpha rays are widely used for medical applications because they destroy human cells, usually for cancer treatment, but they lose energy at the time of transferring materials for that reason, alpha rays are not suitable for scanning suitcases at airports, since they do not would serve for that application
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Around 4.1 billion years ago the first single celled organism appeared
Answer:
The correct option is B, THE LOCATION OF THE FOSSILS WERE ONCE MUCH CLOSER TO EACH OTHER.
Explanation:
The discovery of identical species of organisms at different location on the earth continent has been explained by the theory of plate tectonic. The theory of plate tectonic states that the outer layer of the earth is divide into several plates, which are capable of moving around the earth in relative positions to one another.
Using the theory of plate tectonic, the geologists in this question will conclude that the fossils discovered at different sides of the ocean were closer together before, but were moved away from each other as a result of the process of plate tectonic.