An online news story suggests a connection between a chemical dye found in foods and
the development of mouth ulcers. As a budding young scientist, you refer to the journal
in which the original research was published to see whether or not the research
followed the scientific method. You are looking for which of the following four
requirements?
a. design an experiment, state the hypothesis, collect data from a previous experiment,
then test your hypothesis
b. determine problem, develop a hypothesis, collect data from observations, and test
your hypothesis
c. identify the problem, create a theory, publish your findings, and finally test your
hypothesis
d. both a and c.
The hyoid bone of the juvenile Australopithecus afarensis fossil suggests that this
species probably could not
a. speak like a modern human.
b. walk on two legs over long distances.
c. climb trees very effectively.
d. eat tough, fibrous foods.