Continuity mistake: When Mara is one year old she has dark eyes. When she is older in the next clip she has blue eyes.
Suggested correction: She is also an alien. We don't know if those things work the way the human body does.
Continuity mistake: When the crew is fleeing the mayhem, DR Verner tells them to leave and that she will be right behind them - it is dark outside. In the next clip if you look at the windows behind her you will see daylight in the window blinds.
Revealing mistake: When the minister's wife drops the torch it sets her on fire, the camera pans up, showing she's completely engulfed. In the next shot you can see she's behind the flames and not on fire at all.