Answer:
The independent variable (IV) is the characteristic of a psychology experiment that is manipulated or changed by researchers, not by other variables in the experiment.
For example, in an experiment about the effect of nutrients on crop growth: The independent variable is the amount of nutrients added to the crop field. The dependent variable is the biomass of the crops at harvest time.
Therefore : 3. the variable that responds to what the scientist changes in an experiment
Radioactive is the most penetrating nuclear radiation
Answer:
the answer is C acid dissolving limestone
Explanation:
B. Energy and membrane proteins, the energy is to give the extra push if a molecule is moving against the gradient and the membrane protein is the passage from in or outside the cell
