Answer:
An urban community is the largest type of community. So 3 is false.
Pittsburgh is a city in western Pennsylvania. So True.
Explanation:
Wien's displacement law states that the black-body radiation curve for different temperatures will peak at different wavelengths that are inversely proportional to the temperature.
Answer:
B The St. Lawrence Seaway
This is known as a grain elevator, though this term can also refer to a bucket elevator which is used purely to deposit the grain into another store facility.