Ocean acidification

What is ocean acidification?

• Adding salt to the ocean

• Rising temperatures in the ocean

• The ocean becoming more acidic because of absorbed carbon dioxide (CO2)

• Cleaning the ocean

What gas is mainly responsible for ocean acidification?

• Oxygen

• Carbon dioxide

• Nitrogen

• Helium

How does ocean acidification affect coral reefs?

• It makes them grow faster

• It bleaches or damages them

• It turns them into sand

• It has no effect

What happens to shells and sea creatures with hard shells in acidic oceans?

• Their shells grow bigger

• They change colour

• They turn into jellyfish

• Their shells become weaker

Which of these human activities increases CO2 in the atmosphere?

• Planting trees

• Riding bicycles

• Burning fossil fuels like coal and gas

• Using solar panels

What can you do to help reduce CO2 emissions?

• Use renewable energy like wind or solar power

• Recycle and reuse materials

• Plant more trees

• All of the above