Answer:
an independent variable is a variable that we choose to change to see that happens. ( eg. the temperature when testing evaporation).
a dependent variable is the variable that we measure. ( so maybe how much water evaporates)
The answer is C.<span>The shell protects the crab from predators</span>
Everything but the fact that one has a nucleus and the other does not
Answer:
Change in the vascular system.
Explanation:
High blood pressure occurs when the arteries in the human body system become rigid thereby making the blood pressure rise.
The cause for this situation particularly in older people is the changes in the vascular system or circulatory system.
This is said to be vasoconstriction which lowers the flow of blood in the circulatory system, thereby causing high blood pressure
Hence, since Mr. Ackah is a retired teacher, it is believed that he is an old man susceptible to changes in the vascular system or vasoconstriction.
