Narcotic injections are used primarily in emergency rooms and medical offices. There are two main scenarios in which they are generally administered: When Migraine attack is not relieved by a Migraineur's usual medications and the pain and other symptoms are severe.
No, Mars is about one half of the size of Earth. Below is a comparison chart so the you can get an idea of how much smaller Mars is than Earth. Mars Compared to Earth.
Here, not only mass but also density becomes important. A denser planet will have more mass than another of the same size. The Earth is the denser planet in the Solar System, which means that it surface gravity is very high compared to its mass. Because of that we have a bigger surface gravity than Uranus (the earth has 9.79 m/sÂ² while Uranus has 8.87), and almost as big as Saturn and Neptune (10.44 and 11.15 respectivelly).