1) The accumulation of toxins is called what? a) Biomass b) Biaccumulation c) Food chain d) Persistant chemicals 2) Acid rain is mainly caused by which gas? a) Sulphur dioxide b) Carbon monoxide c) Carbon dioxide d) Oxygen 3) What process releases carbon dioxide? a) Growth b) Heart beating c) Photosynthesis d) Respiration 4) What source of carbon is man releasing into the atmosphere? a) Sea water b) Carbon monoxide c) Fossil fuels d) Cars 5) What is always at the bottom of a food chain? a) A tree b) A primary consumer c) A predator d) A producer 6) What happens to energy has it goes up the food chain? a) It stays the same b) It is lost to surroundings c) It increases d) It decreases 7) What do herbicides kill? a) insects b) weeds c) crops d) pests 8) Why would a farmer use fertiliser on his crops? a) To grow more crops b) To stop insect eating them c) To save money d) To grow different types of crop 9) Why are predators more at risk from toxins in the food chain? a) There are less of them b) They are weaker c) Toxin is more concentrated d) There is more toxin 10) What is 50% of 1000? a) 500 b) 500% c) 50% d) 5000

Ecology quiz

by Anonymous
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