Master GCSE Biology

MS1:

- A habitat is the natural environment in which an organism lives (1)

MS2:

- Abiotic factors (e.g., temperature, light) can determine the suitability of a habitat for a particular species (1)

- Example: High temperatures may restrict species distribution to cooler areas (1)

MS3:

- Forests provide diverse habitats for a wide range of species (1)

- Forests help maintain the ecological balance by regulating nutrient cycles (1)

- Forests provide food and shelter for animals (A2)

MS4:

- Producers (e.g., plants) convert sunlight into chemical energy (1)

- Consumers (e.g., animals) feed on producers or other consumers, obtaining energy from them (1)

- Decomposers (e.g., bacteria) break down dead organisms and recycle nutrients back into the ecosystem (1)

- Each level in the food chain represents a step in the flow of energy (1)

MS5:

- The total mass of living organisms in a population or ecosystem (1)

MS6:

- Deforestation reduces the number of trees available to absorb carbon dioxide during photosynthesis (1)

- This leads to an increase in atmospheric carbon dioxide levels and contributes to climate change (1)

MS7:

- Sustainable forestry practices (e.g., reforestation, selective logging) (1)

- Reducing pollution and waste (e.g., recycling, composting) (1)

- Protecting and managing natural habitats (e.g., national parks, wildlife reserves) (A2)

MS8:

- Abiotic factors (e.g., temperature, availability of resources) can limit population growth (1)

- Biotic factors (e.g., competition, predation, disease) can also regulate population size (1)

- Interactions between individuals can affect the distribution and survival of a population (1)

- Carrying capacity refers to the maximum population size that can be sustained by the available resources (1)

MS9:

- A group of different populations living together in the same ecosystem (1)

MS10:

- Food webs show multiple interconnected food chains within an ecosystem (1)

- Example: A food web could include plants, herbivores, carnivores, and decomposers, with multiple feeding relationships between them (1)

- Food webs provide a more realistic representation of the complex interactions within an ecosystem (1)