(b) identify The dependent variable in the experiments. Identify a control group missing from the second experiment. justify the need for this control group in the second experiment.

Ageologist determines that a sample of a mineral cant be scratched by a steel nail but can be scratched by a masonry drill bit based on this information the sample mineral has to be softer than

Why should the united state be concerned about air pollution in china?

What molecule does hemoglobin decay into over time