Since pressure is force per unit area, blood pressure could be thought as the force exerted by the blood to the surface area of your blood vessels. When your blood vessels dilate, it means that they expanded. The result would be faster flow of blood. When this happens, the force of the blood is not any more concentrated on your blood vessels because there is more room available.
Think of a faucet where tap water flows. When you stopper the faucet with your finger, you feel the force of the water. The pressure builds up as manifested by the sound your faucet makes. But when you release your finger, the water rushes through and flows faster. The pressure is released. Therefore, when your blood vessels are dilated, your blood pressure decreases.
1. The answer is (d.) algae
In a primitive type of community, algae is most likely to be found than deer, trees, and shrubs. In anthropology, primitive culture is referring to a society or a community to lack cultural, technological, or economic sophistication.
2. The answer is (b.) a natural recovery process
Ecological succession is the process of change within an ecological community.Succession occurs because organisms gradually change the environment.
1. Species vary over time
2. The fossil and the living species will have some similarities and some differences
Cells get their instruction from the formula. So that would be D) DNA.
