Ocean Acidification and Marine Life Effects

The video discusses the impact of climate change on ocean acidification, primarily due to increased CO2 emissions. This leads to thinner calcified skeletons in Coraline algae and affects other marine life, such as cold-water corals and marine snails. The acidification process involves CO2 dissolving in seawater, forming carbonic acid, which lowers pH levels. By 2100, ocean pH is expected to drop significantly, affecting marine ecosystems and increasing underwater noise levels, disrupting animal communication.

What is the primary cause of ocean acidification?

• Increased salt levels

• Carbon dioxide emissions

• Rising sea temperatures

• Overfishing

What percentage of the Earth's surface is covered by oceans?

• 60%

• 50%

• 70%

• 80%

How does carbon dioxide affect seawater chemistry?

• It decreases water density

• It produces carbonic acid

• It raises the water temperature

• It increases the water's salinity

By the end of the 21st century, how will pH levels compare to the past 650,000 years?

• Slightly higher

• Unchanged

• Lower than ever before

• Higher than ever before

Which marine animals are most affected by ocean acidification?

• Sea turtles

• Sharks

• Coraline algae and marine snails

• Dolphins

What did scientists observe in their simulation of future ocean conditions?

• Dissolution of snail shells

• Increased fish populations

• Decreased sea levels

• Thicker coral skeletons

What is a potential consequence of the disappearance of tiny marine creatures?

• Cleaner oceans

• Increased coral growth

• Disruption of the food chain

• More food for seabirds

How does ocean acidification affect underwater noise levels?

• It decreases noise levels

• It increases noise levels

• It makes noise levels unpredictable

• It has no effect

What role do minerals in seawater play in underwater communication?

• They create noise

• They absorb vibrations

• They have no role

• They amplify sound

What is a predicted effect of increased underwater noise?

• Increased coral growth

• Disruption of animal communication

• Improved fish communication

• Quieter marine environments