Name an element that can be used to date back billions of years?
Using radiometric

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right