Oceans are being depleted of oxygen due to climate change and run offs

The video discusses how climate change and nutrient pollution are depleting ocean oxygen levels. A report highlights that nitrogen and phosphorus runoffs from sewage, agriculture, and industrial pollution are major contributors, especially in coastal areas. Climate change is also heating oceans, reducing their oxygen capacity. The study reveals a 2% global drop in ocean oxygen, with up to 40% in tropical regions. This deoxygenation affects marine biodiversity, harming larger fish like tuna and sharks, while benefiting microbes and jellyfish. Fish are forced closer to the surface, increasing their vulnerability to overfishing.

What are the primary contributors to the depletion of oxygen in the oceans?

• Overfishing

• Carbon dioxide emissions

• Nitrogen and phosphorus runoffs

• Plastic pollution

How does climate change affect the ocean's ability to hold oxygen?

• It causes oxygen to dissolve more easily

• It reduces the ocean's oxygen-holding capacity

• It has no effect on ocean oxygen levels

• It increases the ocean's oxygen levels

By what percentage has the dissolved oxygen in the ocean dropped globally?

• 2%

• 10%

• 20%

• 5%

Which marine species are negatively impacted by deoxygenation?

• Coral reefs

• Tuna, Marlin, and Sharks

• Microbes

• Jellyfish

What consequence does the lack of oxygen have on larger fish?

• They are forced to live closer to the surface

• They migrate to colder regions

• They thrive in deeper waters

• They become more resistant to pollution