The end of which era left many plants, insects, and salamander-like animals on the Earth? a.
the Precambrian time
c.
the Paleozoic era
b.
the Mesozoic era
d.
the Cenozoic era

Please select the best answer from the choices provided

A
B
C
D

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.