The great barrier reef is the largest coral reef in the world. why is this reef so important?
a. it forms a physical boundary between the islands of melanesia and australia.
b. it supports amazing biodiversity, and is home to thousands of different species.
c. it provides a unique energy source called “geothermal energy.”
d. it is home to underwater volcanoes and waterfalls

Complete the activity titled "comparative urban environments." every city is shaped by different cultural forces. in one to two paragraphs, contrast the culture of two different cities from this activity: new york and buenos aires. what makes these cities stand apart from each other culturally? what is unique about each city’s attitude, language, habits, foods, or architecture?

Which statements describe cultural influences? florida is bordered by water on three sides. french is spoken in parts of louisiana. forests are cleared to provide space for cattle grazing. male children are encouraged to attend the university. the longest river on the continent is located here. birthdays are celebrated on january 1st. per capita income of northern buckland is more than $100,000.

Who developed the theory of plate tectonics?