1. Consumers
2. Top consumers
3. Decomposers
4. Producers
Producers
1. Consumer
2. Producer
3. Producer and consumer
4. Producer and decomposer
Consumer
1. Sukachev
2. Vernadsky
3. Haeckel
4. Tansley
Tansley
1. Predator food chain
2. Parasitic food chain
3. Detritus food chain
4. None of the above
Detritus food chain
1. Desert
2. Grassland
3. Shrubland
4. Forest
Desert
1. all heterotrophs
2. animals feeding on plants
3. animals preying on herbivorous animals
4. larger animals
animals preying on herbivorous animals
1. Because of absence of the right type of algae and fungi
2. Because of lack of moisture
3. Because of air pollution
4. Because natural habitat is missing
Because of air pollution
1. Natural ecosystem
2. Man-made ecosystem
3. Balanced ecosystem
4. Peripheral ecosystem
Man-made ecosystem
1. ZPlants and animals
2. Weeds and trees
3. Biotic and abiotic
4. Frogs and men
Biotic and abiotic
1. Gross primary productivity
2. Secondary productivity
3. Net primary productivity
4. Net productivity
Secondary productivity