Marine Conservation

What is bycatch?

• The practice of catching only large fish.

• The practice of catching non-target marine life in large nets.

• The practice of fishing in freshwater bodies.

• The practice of fishing without using nets.

How does bycatch impact the environment?

• It only affects the fish population.

• It has no significant impact.

• It harms marine life and disrupts the food chain.

• It benefits the marine ecosystem.

What happened when the Canadian government shut down the cod fisheries offshore almost 20 years ago?

• The fish population increased immediately.

• The population had almost entirely collapsed with declines of more than 99%.

• The fish population remained the same.

• The fish population decreased further.

What is ballast water?

• Water used for drinking on ships

• Sea water taken on by large ships sailing without cargo

• Freshwater used for cleaning ships

• Water used for cooling ship engines

What is the main threat to the Great Barrier Reef and waters around Australia mentioned in the text?

• Overfishing

• Marine organisms brought in by foreign ships

• Climate change

• Pollution from oil spills

What is the main cause of biofouling on ships?

• Freshwater organisms

• Organisms in ballast water

• Chemical spills

• Engine oil

What toxic chemicals might plastics contain that pose a risk to marine animals and humans?

• Phthalates and bisphenol A

• Sodium chloride and potassium

• Oxygen and nitrogen

• Carbon dioxide and methane

What does bioaccumulation refer to?

• Gradual accumulation of substances, such as pesticides or other chemicals, in an organism

• Rapid increase of marine species in an area

• Sudden decrease in fish population

• Accumulation of water in a reservoir

What is bycatch?

• The practice of catching, either accidentally or through neglect, non-target marine life in large nets

• The intentional catching of large fish

• The process of cleaning fishing nets

• The practice of fishing in freshwater lakes

What is the primary reason for the decline in coral reefs worldwide?

• Overfishing

• Climate change

• Increased tourism

• Marine pollution