Answer: C. Ionic
Explanation: The transfer of one or more electrons from one atom to another means that certain atoms are "amplified" by negative charge, since the electrons are negative, while the other atoms from which the electrons leave become positive. This means that such atoms become negative and positive ions, causing each other to attract opposite charged ions, creating an ionic bond.
<span>Flow maps show how objects move between different areas. They are a type of thematic map, which look at a particular theme or topic. Flow maps often represent movement of goods or weather processes. A physical process that is commonly represented on and tracked by such maps is wind patterns.</span>
The index fossils are fossils that are found in the rock strata of certain geologic period, but they are also fossils that are very common and can be found in numerous places around the globe.
Because they can be found all over the globe, and they are indicative of certain geologic period, the geologists have started to use them as a simple way of determining the age of the rock strata. While this method can not provide the geologists with an accurate year for the formation of the rocks, it is still able to determine the relative age of the rocks. By determining the relative age with such ease by using the index fossils, the geologists are able to immediately make conclusions about the rock strata, have basic information about it, and largely be aware of the processes that formed them and influenced them.
Chilean central valley, and the Andes.
