It is not it something like sand because it would keep the fossil preserved.
<span>Molten material found in the bottom of seafloors indicated underwater eruptions that formed new areas of the seafloor was presented as evidence for seafloor spreading. Due to earths magnetic polarity and its tendency to switch, iron present on the sea floor contained a magnetic record of sea floor expansion progress. Finally, drilling samples obtained in the seafloor indicated the deeper samples of were significantly older than the shallower samples that were brought up.</span>
Desert ecosystems.
Explanation
It’s very dry in the Southwest. They get hardly any precipitation and it’s very hot.
A because if you add and do the equation to all the cups
