The formation of an atoll is a slow process that can take millions of years. It begins when an underwater volcano erupts, creating a buildup of lava on the seafloor. With continued eruptions, the lava continues to build until it breaks through the ocean's surface and forms an island.
B. Napoleon invaded Spain and Portugal - situation in Europe particularly in Spain provided an opportunity for Spain's overseas territories to fight for their independence. Napoleon's army occupied Spain and Portugal where he wanted to change a king which resulted into civil war.
Salt Lake City, Utah is located in a warm desert like area where there are little to no bodies of water for evaporation. New York City however, is located right on the east coast next to an ocean which allows for water to evaporate and fall over New York more than in Utah. This is also why New York gets more snow in the winter. This is known as the lake effect.
Continental/Continental: The Himalayas. The Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and continues today.
Covers one half of the earth is not a characteristic because deserts simply do not cover half the earth