A cell is the basic unit of all life.
A)no, they do, they do have hemoglobin! what they do lack is a nucleus (so answer B is also false)
c) - no, inflammation would be more a response of immune cells (not red blood cells) to a foreign body or organism
d) -yes, this is the correct one!
About 1200 mL or 1.2L from what I have learned.
That would be reproduction with the male parts of a plant meeting the female parts of a plant.
Essentially, a control variable is what is kept the same throughout the experiment, and it is not of primary concern in the experimental outcome. Any change in a control variable in an experiment would invalidate the correlation of dependent variables (DV) to the independent variable (IV), thus skewing the results.
