How do lighting and sound effects add to the effect of a dramatic production? 1: they are necessary for visual and hearing aide 2: they enhance mood and can add mystery and suspense 3: they act as cues for the characters dialogues 4: they direct the audience focus on the set

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.