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The Quiz: Phytoplankton are plants. What’s the name for plankton that are tiny animals? A Metoplankton B Carnivoplankton C Zooplankton Zooplankton are tiny creatures found near the surface of the ocean with their phytoplankton buddies. Both types of plankton just drift along wherever the currents may take them. The correct answer to this quiz is … Read more

The Quiz: Phytoplankton live near the ocean’s surface so they can… A Avoid sharks B Attract fish C Capture energy from sunlight Yes, phytoplankton thrive in sunshine. Like land-based plants, they contain chlorophyll and need sunlight to grow and prosper. The correct answer to this quiz is Capture energy from sunlight.

The Quiz: Phytoplankton are putting on a colorful show in the Chukchi Sea. Where is that? A Between Finland and Estonia B Between Alaska and Russia C North of Greenland The Chukchi Sea is flanked on the west by Russia and on the east by Alaska. In fact, the International Date Line cuts right through … Read more

The Quiz: How long do octopuses live? A A few years B 10 to 20 years C Up to 50 years Octopuses grow quickly, mature early, and die young. Some live less than a year and most only one to two years. The giant Pacific octopus is one of the longest-lived octopus species, with a … Read more

The Quiz: Glass octopuses are among the smallest octopus species. What is the largest? A Giant Pacific octopus B Yellow octopus C Southern giant octopus The giant Pacific octopus is widely considered to be the biggest species, with an average length of 14 feet. They can weigh up to 100 pounds—although the largest known specimen … Read more

The Quiz: What kind of deep-dwelling octopus is this? A Glass octopus B Blue-ringed octopus C Mimic octopus The glass octopus lives where sunlight cannot reach, at depths of about 3,000 feet. Glass octopuses are transparent and nearly invisible to predators in the darkness of the deep ocean. They live in the subtropical and tropical … Read more

The Quiz: When did the Berlin Wall fall? A 1978 B 1989 C 1996 The correct answer to this quiz is 1989.

The Quiz: This bridge once marked the border of a divided city. Where are we? A Berlin B Belfast C Belgrade The correct answer to this quiz is Berlin.

The Quiz: What river does the Oberbaum Bridge span? A Rhine B Spree C Danube The correct answer to this quiz is Spree.