The microbes that make dead things rot are called
- decomposers
- nutrients
- producers
- consumers
Which one of these are not classed as a microbe?
- consumers
- viruses
- bacteria
- mould
The movement of nutrients is called a
- nutrient cycle
- carbon cycle
- nitrogen cycle
- water cycle
Plants take up ………...through their roots.
- nutrients
- soil
- food
- carbon dioxide
Nutrients get into animals through a process called
- feeding
- photosynthesis
- breakdown
- decomposition
Nutrients are returned to the soil by
- breakdown
- feeding
- photosynthesis
- consumers
Which of the following is a producer
- oak tree
- rabbit
- mould
- bacteria
Which of the following is a consumer
- rabbit
- oak tree
- mould
- bacteria
Which of the following is a decomposer
- mould
- rabbit
- oak tree
- grass
Which word describes humans in a food web
- omnivores
- herbivores
- carnivores
- primary consumers
We can test foods for starch by crushing and dropping on some
- iodine
- hydrochloric acid
- water
- benedicts solution
Approximately what percentage of our waste comes from packaging?
- 35%
- 25%
- 10%
- 5%
Without fungi and bacteria dead things would
- never decompose
- decompose quicker
- return their nutrients to the soil quicker
- decompose at the same rate
Which process makes soil nutrients part of green plants?
- Photosynthesis
- feeding
- breakdown
- Cycling
Which of these are not nutrients found in chemical fertilisers
- Chlorine
- Phosphorous
- Nitrogen
- Potassium
Which of these is a natural form of fertiliser?
- Manure
- Crop spraying
- NPK pellets
- Chemical soil improvers
Which of the following should be increased to increase the rate of photosynthesis in plants in a green house?
- Carbon Dioxide
- Oxygen
- Nitrogen
- Temperature
Crops grown without using chemicals are called
- organic
- ChemFree
- small
- additive free
Which of the following would not affect the amount of crop grown?
- Plenty of rain
- Drought
- War
- Increase in the number of pests
Chemicals used to control pests are called
- Pesticides
- Herbicides
- Biological control
- Organic control
Introducing ladybirds to control lice on trees is a form of
- biological control
- chemical control
- organic control
- pesticide
Top carnivores can be killed even when small amounts of pesticides like DDT are used. This is because
- it breaks down slowly and becomes more concentrated up the food chain
- it breaks down quickly and becomes more concentrated up the food chain
- it breaks down slowly and becomes less concentrated up the food chain
- it breaks down quickly and is more concentrated at the start of the food chain
Which of these does not come under the heading pollution?
- Planting forests
- Oil Spills
- Smog
- Detergents
Fertilisers can be washed out of the soil into rivers causing the water plants to grow out of control and choke the rivers. This is called
- eutrophication
- chemical hazard
- biological hazard
- environmental damage
Burning fossils fuels gives out sulphur dioxide. This can lead to
- acid rain
- Oil Spills
- dangerous tips
- sea birds dying
Which of the following is not regarded as sustainable development?
- Fishing the oceans until stocks run out
- Replacing trees at an equal or greater rate than they are felled for furniture
- Only fishing at levels where natural reproduction can replace them
- Planting forests to replace those cut down to make paper
Which of these is not an essential nutrient for plant growth?
- Oxygen
- Nitrogen
- Phosphorous
- Potassium
Humus is
- a soft black substance made from dead plants and animals found in the soil
- a Greek foodstuff
- made from rocks being broken down
- the result of transport
Animal manure improves soil by
- returning undigested plant material to the soil to be broken down by bacteria
- blocking sunlight from the weeds, stopping them photosynthesising
- creating a lot of smell which helps to repel insects
- giving the plants something to eat
When countries cannot grow enough food due to war, poverty or poor weather conditions the people may be caught in a
- famine
- recession
- boom
- civil war