Zadanie 8
A hypothetical crop tolerates herbicide J. The model survey records weed species resistant to J. Suggest environmental problems that could result from the trend.
- Materiał graficzny
Environmental constraints on sustainable farming
Evaluate soil loss, nutrient inputs, chemical pollution and greenhouse-gas impacts of agricultural practices.
Tę umiejętność sprawdza 11 zadań wzorowanych na arkuszach IB z lat 2023–2024.
Zadania sprawdzające tę umiejętność: 11 Otwórz w wyszukiwarce z filtrami
Zadanie 9a
A hypothetical crop is engineered to resist herbicide H. H kills susceptible weeds and is readily broken down by soil microorganisms. Explain two advantages of growing the resistant crop.
Zadanie 13
A severe fire occurs on a hillside. Outline how this can increase soil erosion.
Zadanie 17
A hypothetical farming programme proposes introducing a predator from another region to suppress a crop pest. Evaluate introducing an alien species as biological pest control.
Zadanie 8b
A microbial biogas digester leaves a solid and liquid organic residue. State one useful application of this residue.
Zadanie 11a
A crop line is resistant to a herbicide used against weeds in the same field. Outline one benefit of cultivating the resistant crop.
Zadanie 11b
In a model region, cultivation of herbicide-resistant crops expanded during the period shown. The chart records the cumulative number of weed species reported resistant to that herbicide. Comment on environmental consequences of widespread use of these crops.
- Materiał graficzny
Zadanie 12b
Evaluate recirculating tanks rather than flow-through tanks for fish grown at high density.
- Materiał graficzny
Zadanie 14b
New mineral ground in a cold northern valley is gradually colonized by plants. Much of the subsoil remains frozen throughout the year. Outline processes that can increase soil depth over time.
- Materiał graficzny
Zadanie 11c
Outline two ways livestock production can alter nutrient cycling.
- Materiał graficzny
Zadanie 13a
(i) State one process that removes nutrients from the soil store. (ii) Rock weathering releases nutrients into soil. Add X to the arrow representing this input.
- Materiał graficzny