Zadanie 1e
Using the evidence, discuss whether killing hawks would improve the long-term sustainability of the woodland and the released quail.
- Materiał graficzny
Stability and change
Umiejętności w tym dziale
Umiejętności z tego działu sprawdza 45 zadań wzorowanych na arkuszach IB z lat 2023–2026. Dział pojawia się w 22 z 57 arkuszy w bazie.
Zadania z tego działu: 45 Otwórz w wyszukiwarce z filtrami
Zadanie 5b
Discarded large plastic fragments accumulate in a coastal ecosystem. Outline consequences for marine organisms.
Zadanie 29
A keystone species disappears from a food web. Which outcome is plausible? A. All interactions necessarily become more stable B. Every remaining species immediately becomes extinct C. The number of trophic levels must increase by one D. Some previously…
Zadanie 29
Runoff rich in nitrate enters a small pond and stimulates eutrophication. Which pair of changes is expected during the developing algal bloom and subsequent decay? A. Less algal biomass and lower microbial oxygen demand B. More algal biomass and greater…
Zadanie 30
Why can excess nutrient runoff reduce the diversity of animals in a lake? A. Phosphate necessarily biomagnifies as a poison in every food chain B. Decomposition following excessive algal growth depletes dissolved oxygen C. Additional nutrients make all aquatic…
Zadanie 2c
A predator acts as a keystone species in a coastal food web. Explain possible effects of losing this species.
Zadanie 4a
Reintroducing a native ecosystem engineer to a wetland changes water flow and creates pools and channels. Outline the importance of keystone species.
Zadanie 4b
Reintroducing a native ecosystem engineer to a wetland changes water flow and creates pools and channels. Suggest why greater biodiversity can benefit the ecosystem.
Zadanie 4c
Reintroducing a native ecosystem engineer to a wetland changes water flow and creates pools and channels. Outline two other rewilding approaches that restore natural processes, apart from bringing back a keystone species.
Zadanie 5a
A farmer considers an insecticide that kills a wide range of insect species. Suggest one disadvantage compared with a narrowly targeted insecticide.