Dr. Peterson does an experiment to research the growth rate of mice. He has two groups of mice. He feeds one group a type of foo
d and adds chemical A, which is supposed to increase growth rate. The other group he feeds the same food without chemical A added. His research shows that chemical A increases growth rate by 30%. He does the experiment 4 times and comes up with the same result each time. Dr. Peterson concludes that chemical A does increase the growth rate of mice. Is Dr. Peterson's conclusion supported by scientific knowledge?
A.
No; scientific knowledge never comes from research or experiments.
B.
Yes; any study that involves a percentage is based on scientific knowledge.
C.
Yes; his conclusion is supported by evidence from his experiment.
D.
No; science cannot be used to research small animals such as mice.
The correct answer is letter A. Venom glands and varied diets are the reasons why cane toads are considered as invasive species in Australia. They cause major ecological imbalance within their immediate surroundings and have caused an infestation all over Australia.
