Television was first demonstrated to the public at the New York World’s Fair of 1939. Like radio before it, the new medium of television was broadcast over the public airwaves and offered exciting new opportunities for transmitting information to a wide audience. However, such opportunities were limited by the quantity of usable broadcasting frequencies. Too many broadcasters using the limited range of frequencies would create interference and make transmissions unreliable. This situation, known as spectrum scarcity, prompted Congress to pass the Communications Act of 1934, which created the Federal Communications Commission (FCC).Which word or phrase from the passage means about the same as spectrum scarcity?medium of televisionpublic airwaveslimited range of frequenciesinterference

a-he encouraged islamic schools to introduce greek texts.

d-he invited greek scholars to teach their texts to the locals.

explanation:

the transmission of the greek classics to latin western europe during the middle ages was a key factor in the development of intellectual life in western europe.[1] interest in greek texts and their availability was scarce in the latin west during the earlier middle ages, but as traffic to the east increased so did western scholarship.

mark brainliest and have a great day!

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.  

the red coloration of the lungs looks alarming and adds to the overall message that the flu is threatening apex