Answer: 1 million

Answer: ENIAC
ENIAC was the first electronic computer made. It was so large it filled a whole room and was used to solve large numerical equations.

Answer: A prickle

Answer: The Blue Whale

Answer: Leonhard Euler.
Swiss-born Euler is held to be one of the greatest mathematicians in history. He made pioneering contributions to several branches of mathematics and introduced much of the modern mathematical terminology and notation.

Answer: Crust

Answer: Mauna Loa
Mauna Loa is located in Hawaii and is one of the five volcanoes that forms the island. The last time Mauna Loa erupted was April 15, 1984.

Answer: O3

Answer: 91

Answer: No