Answer:
The Circulatory or Cardiovascular System
Explanation:
This system allows the circulation of blood to every cells of the body with the transport of oxygen and nutrients essential for its survival. These nutrients include glucose, amino acids, vitamins, minerals and so on produced by the body through metabolism.
The circulatory system comprises also of the lymphatic system, which allows for the flow of lymphs.
The circulatory system is made up of systemic and pulmonary circulation. The heart and blood vessels being the major structures in this circulation. The blood moves to the lungs and get oxygenated (pulmonary circulation) and it then returned back to the heart for transport to other parts of the body known as the systemic circulation. Hemoglobin, which carries oxygen in the blood and also carbon iv oxide for excretion out of the plasma. From the digestive system, the nutrients are absorbed into the blood plasma and then transported for the cell use or for storage.
Answer:
See the answer below
Explanation:
<em>The control group in an experimental study is the subject group that is not administered the treatment variable. The control group forms the baseline for comparing the effects produced by the treatment variable on the experimental group.</em>
Thus, in this case, <u>the control group would be the 10 mice that were not exposed to the radio waves.</u>
The independent or the manipulated variable, in this case, is <u>the exposure or otherwise of the mice to the radio waves. </u>
The dependent variable is the actual variable that is going to be measured, otherwise known as the effect variable. In this case, the dependent variable would be <u>the strength of the mice measured by their ability to push the block of wood blocking their food.</u>
Since 8 out 10 mice and 7 out of 10 mice were able to push the wooden block in both the experimental and the control group, <u>Bart's conclusion should reject the hypothesis that the radio waves make mice extra strong</u>.
Bart's experiment can be improved <u>by increasing the number of subject mice in each group</u>. The more the number of subjects, the more the accuracy of the outcome would be.
