The independent variable of an experiment is the one that is intentionally changed or manipulated to see the results of changing said variable.
We are told that in each different group, the amount of caffeine that is given to the dogs changes - in the control group, they get no caffeine, in the 2nd group, they get 10 mg of caffeine each, and in the 3rd group, they get 50 mg of caffeine each.
Therefore, since the amount of caffeine that is given to the dogs is the only variable that is being manipulated, this is the independent variable.
Charles Darwin was the one who made the theory of evolution.
The answer is c. Hemophilia
Unset stomach its bad
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<span>ladograms are tree-like diagrams used to show relationships between different organisms. The node represents the end of the ancestral taxon under consideration, the stems and the species that split from the ancestor.</span>
