Answer:
Explanation:
1) Excitation brings about contraction.
2) Contraction leads to an increase in blood pressure.
3) Changes in blood pressure results in the opening and closing of the heart valves.
4) The opening and closing of heart valves then regulates the flow of blood and it's volume.
<u>Answer:</u> Comparison
<em>Comparison is the determining the likelihood of two samples with the same characteristic being from two different sources.</em>
<u>Explanation:</u>
While comparison is made there is always a certain similar character taken which are common in nature. After <em>the two topics are placed in front then decision can be made easily on various basis. </em>
Comparison does gives the <em>definition for the good and the bad, pretty and ugly.</em> It can also be sued in a negative way to dominate someone.
One of the species dieing off.
Answer:
The correct answer is option D. "whether the muscle moved the skeleton, the heart, or another type of internal organ".
Explanation:
It is possible to determine whether a sample of muscle tissue moved the skeleton, the heart, or another type of internal organ by analyzing its cellular structure and organization. For instance cardiac muscle is striated and organized into sarcomeres, while smooth muscle that is located in organs such as intestines, uterus and stomach are not organized into sarcomeres.
