Pre-engagement: Perhaps the most common meaning of a promise ring is the commitment to a relationship that is headed toward engagement. When you feel that your partner is the right one for you but you arenât quite ready for marriage, a promise ring is also known as a pre-engagement ring.
There is a big difference between external and internal respiration. External respiration is basically the transfer of gas between respiratory organs such as lungs and the outer environment. It takes place prior to internal respiration.Internal respiration is the transfer of gas between the blood and cells. External respiration also known as breathing refers to a process of inhaling oxygen from the air into the lungs and expelling carbon dioxide from the lungs to the air.Exchange of gases both in and out of the blood occurs simultaneously.here is a big difference between external and internal respiration. External respiration is basically the transfer of gas between respiratory organs such as lungs and the outer environment. It takes place prior to internal respiration.
Internal secondary data is found inside your organization, while external secondary data is information collected and stored by some person or organization outside of your organization.nternal sources include data that exists and is stored inside your organization. External data is data that is collected by other people or organizations from your organization's external environment.