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?

Biologists recognize five levels of cell organization. the lowest and simplest is the cellular level. organisms here are either unicellular organisms, like protozoa, or colonial organisms. colonial organisms are composed of single-celled individuals that stay together to sustain the life of the whole colony. next on the scale of complexity is the level occupied by tissue. a tissue is a group of similar cells which perform a similar activity. tissues that are organized around a common function together make up an organ, the third level of complexity. the fourth level of organization is the system, formed by a group of organs which together perform a specific bodily process. the fifth and highest level is the organism level, in which body systems work together in a structure capable of independent life. main idea:

To celebrate black history month, we will be learning about the lives of some african americans. your assignment is to find biographical (life story) information about one famous african american historical figure. be sure that you find the following information about the person you select: date of birth, country of origin, how he or she (or his/her family) came to the united states, why he/she is famous, and how the person died (if applicable). we will use the information that you gather in the research on an in-class project. be sure to keep track of your sources; your final project will require a works cited page. in an internet search engine, which group of keywords is most appropriate for this assignment? a) black history month, date of birth b) african, american, people, biographies c) famous people, africa, america, project d) african american, people, countries, famous

What functions as a reflexive pronoun in the sentence the professor herself wanted to attend the conference, but it was cancelled when she and several other presenters had to excuse themselves