B. Red blood cells contain a protein that binds with oxygen.
this question is incomplete but I have added The Answer options to your question
a) He does not have a hypothesis.
b) He only has one group. He has not established a comparison
c) He has not measured an outcome.
d) The groups were not equal to begin with.
Answer:
b) He only has one group. He has not established a comparison
Explanation:
A randomized controlled experiment can be defined as an experiment that has two groups which it randomly assigns participants to.
These two groups are:
1.) the experimental group and
2.) The controlled group on whom the study is being performed.
Now Alberti does not have any of these groups we have listed. He performed the testing on the same people before they consumed alcohol and after they consumed alcohol. Therefore this study was not comparative in nature.
A material safety data sheet (MSDS) provides information on materials and chemical products. Both of these technicians are correct since the MSDS contains several sections including two sections referring to the toxicological information and the physical and chemical properties of the material. The physical and chemical properties involve information such as freezing/melting point, viscosity, solubility in water and others. The toxicological information should include information on the short- and long-term effects of exposure to this material and the several types of toxicity that this material could cause.
It’s an example of a long term because it’s going to Andy a while to do that.
