What If the Sea Suddenly Dried Up?

What percentage of Earth's surface is covered by water?

• 50%

• 71%

• 85%

• 97%

If the sea dried up, what would happen to the geographical boundaries of continents?

• They would become more distinct.

• They would merge and lose their current shapes.

• They would expand into the ocean.

• They would remain the same.

What crucial environmental process would cease without the sea?

• Photosynthesis

• The water cycle

• The nitrogen cycle

• The rock cycle

How does the ocean contribute to the carbon cycle?

• By producing carbon dioxide

• By releasing carbon into the atmosphere

• By storing carbon in the form of fossil fuels

• By acting as a carbon sink through marine life

What role do plankton and algae play in the ocean's carbon cycle?

• They release carbon into the atmosphere.

• They convert carbon into oxygen.

• They store carbon in their shells.

• They consume carbon and are part of the food chain.

What is a significant consequence of losing the ocean's ability to absorb solar energy?

• A stable atmospheric temperature

• A cooler global climate

• Increased volcanic eruptions

• A more combustible world with frequent fires

What would be the fate of marine life if the sea disappeared?

• They would migrate to freshwater bodies.

• They would perish due to lack of habitat.

• They would adapt to land life.

• They would evolve into new species.

Why would humans struggle to survive in a world without oceans?

• Lack of food resources

• Overpopulation

• Scarcity of breathable air and water

• Increased volcanic activity

What is one potential way humans might adapt to a world without oceans?

• Living underground to avoid heat

• Mechanizing bodies to reduce water dependency

• Becoming nocturnal to escape the sun

• Developing gills to breathe underwater

What is a possible future scenario for Earth as the sun becomes a red giant?

• Earth will become a frozen wasteland.

• Earth will be engulfed by the sun.

• Earth will be shielded by a new atmosphere.

• Earth will develop new oceans.