allow me to answer that for you
In the case of an object moving through a fluid, such as an aircraft in flight, the Mach number is equal to the velocity of the object relative to the fluid divided by the velocity of sound in that fluid.
<span>There are three ways of organizing concepts: conceptual hierarchy, where one groups similar information together, schemas, where one organizes what one already knows about something, and semantic networks, where a group of concepts are linked or connected together by related concepts.</span>
Answer:
D. Any action that is meant to help others
Explanation:
Prosocial behavior are basically helping actions. Any form of actions that is done that benefits others. Although, A may fit the bill, the difference is that it describes altruism. Prosocial behavior is just the action taken, not considering the motivation.
The correct answer for the question that is being presented above is this one: "B. building of the transcontinental railroad --> disappearance of the frontier." The pair of events that did the first event most directly influence the second is the building of the transcontinental railroad --> disappearance of the frontier.
