De que depende la tabla periodica que se utiliza??

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above