Biodiversity

What is fish farming?

• FIsh are fed in nets.

• Fish grow in warm water tanks.

• Fish are caught in tidal nets.

• Fish are lured with lights.

Why is fish farming better than catching wild fish.

• Fish farming produces less fish.

• Catching wild fish always leads to overfishing.

• Wild fish are too hard to catch.

• Farmed fish taste better than wild.

What problem comes from farm fish faeces?

• Poisonous, global warming and explosive gases escape.

• Fish tastes of faeces.

• Fish die from lack of Oxygen.

• Nets rot.

Name a species introduced to Australia to control cane beetles that has got out of control.

• Cane beetle jumping spider.

• Cane toad.

• Beetle wasp.

• Koala

What was the effect of introducing cane toads?

• Sugar cane yield increased.

• Grey cane beetle population reduced.

• Death adders increased.

• Freshwater crocs decreased.

How does fertiliser affect wheat yield?

• Decreases yield.

• Increases yield.

• Same yield but takes longer.

• Same yield but takes less time.

How do fish farms affect biodiversity.

• Increase as big tame fish species increase thanks to food supplied.

• Increase as big wild fish species increase thanks to wasted food.

• Decrease as big wild fish die from eutrophication.

• Decrease as big farmed fish species die from disease.