Ocean Acidification and Its Effects

The video discusses ocean acidification, its causes, and effects on marine life, particularly coral reefs. It explains how increased carbon dioxide levels lead to lower pH levels in oceans, causing harm to organisms with carbonate-based shells and skeletons. The video also covers the concept of coral bleaching, where stressed corals expel symbiotic algae, leading to ecosystem disruption. The broader impacts on food chains and commercial fisheries are highlighted, emphasizing the importance of understanding and addressing ocean acidification.

What is the primary cause of ocean acidification?

• Uptake of carbon dioxide from the atmosphere

• Increase in oceanic oxygen levels

• Decrease in ocean salinity

• Increase in ocean temperature

What does a pH level of 7 indicate?

• The solution is acidic

• The solution is basic

• The solution is neutral

• The solution is highly acidic

Which of the following is NOT a source of carbon dioxide contributing to ocean acidification?

• Burning of fossil fuels

• Deforestation

• Photosynthesis

• Industrial processes

What is formed when carbon dioxide reacts with water in the ocean?

• Hydrochloric acid

• Sulfuric acid

• Nitric acid

• Carbonic acid

How does ocean acidification affect organisms with carbonate-based shells?

• It makes their shells more colorful

• It has no effect on their shells

• It dissolves their shells

• It strengthens their shells

What are coral reefs primarily made of?

• Magnesium

• Calcium carbonate

• Silica

• Iron

What is coral bleaching?

• Corals expelling symbiotic algae and turning white

• Corals growing at a faster rate

• Corals turning black due to pollution

• Corals changing color due to temperature rise

Why are coral reefs referred to as the 'rainforests of the ocean'?

• They produce a lot of oxygen

• They are located near rainforests

• They are home to a wide variety of marine life

• They are dense and difficult to navigate

What is the impact of coral bleaching on marine ecosystems?

• It has no significant impact

• It increases fish population

• It can lead to the collapse of ecosystems

• It enhances biodiversity

How does ocean acidification impact commercial fisheries?

• It increases fish population

• It disrupts the food chain affecting fish availability

• It has no impact

• It makes fish more nutritious