Answer:
C. An experiment that contains only one independent variable.
Explanation:
An experiment can ONLY have ONE independent variable.
Answer:
A
Explanation:
They are examples of endocytosis because they all engulf or bring in substance into cell
In a controlled experiment, an independent variable (the cause) is systematically manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled. The researcher can operationalize (i.e. define) the variables being studied so they can be objectivity measured.
Philosophy would be the discipline concerning with questions like the mind and body dualism and the nature as well as nurture issue while physiology is the branch of biology studying the structures and functions of an organism.These influence the founding of psychology.