<span>Controlled variable is a variable that was made constant in the research. That was because the controlled variables can influence the dependent or independent variable. If the variables is not made constant, it can alter the research result and made it invalid.
In this case, </span>the caffeine and alcohol intake might alter the physical activity or the blood glucose so it should be controlled.
They are prokaryotic cells....
Are u using a punnet square for children or for genotypes
Number 3
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The given question is incorrect. The correct question is:
Question: The thoracic cavity contains the ________. it is found ________ to the vertebral cavity.
a) digestive viscera: inferior
b) kidneys and spleen: deep
c) stomach and liver: superficial
d) heart and lungs: anterior
Answer:
d) heart and lungs: anterior
Explanation:
The thoracic cavity is one of the major body cavities. The thoracic cavity is also called the chest cavity. It is formed by the ribs, the chest muscles, the sternum (breastbone), and the thoracic portion of the vertebral column. It is present in the anterior to the cavity formed by the spine to house the spinal cord. The pericardial cavity is the fluid-filled space of the thoracic cavity present around the heart. The thoracic cavity also has two pleural cavities to house the lungs.
