Water mixing with carbon dioxide from the air and changing the properties of limestone is an example of
a. chemical weathering.
b. erosion.
c. physical weathering.
d. rock weathering

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.