Figure 2 shows the human population from 1600 to 2010 - AQA - GCSE Biology - Question 2 - 2020 - Paper 1

To predict the human population in 2050, we will need to extrapolate the trend shown in Figure 2.

1. Identify the trend from the population data leading up to 2050, which shows a continued increase.
2. Draw an extrapolation line on Figure 2, extending from 2010 to 2050.
3. Estimate the population in 2050 using this extrapolation line. Based on available growth trends, the extrapolated population could approximate 9 to 10 billion.

Thus, the predicted human population for 2050 is approximately 9.5 billion.

Fishing quotas are regulatory measures designed to manage fish stock levels and ensure sustainability. Here are a few ways they can help:

1. Limit Overfishing: By setting quotas, the total amount of fish that can be caught is restricted, thereby preventing the depletion of fish populations.
2. Allow Fish to Reproduce: Quotas help ensure that enough fish remain in the ecosystem to reproduce, supporting long-term sustainability.
3. Promote Recovery of Fish Stocks: When fish populations decrease due to overfishing, quotas can facilitate recovery by restricting the number of fish caught, allowing stocks to rebuild.

Farming techniques have evolved significantly in recent years, driven by the need to feed a growing population and enhance productivity. Here are key points to describe this change:

1. Increased Land Use: Modern agriculture often requires more land, leading to the conversion of forests or wetlands into agricultural fields to meet food demands.
2. Intensive Farming Practices: Tactics such as monoculture and the use of chemical fertilizers and pesticides enable farmers to maximize yield from a smaller area, but can have ecological drawbacks.
3. Biodiversity Challenges: The expansion of agricultural land and the focus on high-yield monocultures have contributed to a decline in biodiversity, as natural habitats are destroyed and fewer species survive.

Golden rice is genetically modified to contain higher levels of Vitamin A, making it nutritionally superior to non-GM rice. This can help combat Vitamin A deficiency, which is prevalent in many parts of the world and can lead to serious health issues.

One reason why some people are concerned about the use of golden rice is the fear of genetically modified organisms (GMOs) potentially contaminating non-GM crops and altering local biodiversity. Additionally, there are worries about the economic implications, such as the dependence on seed companies for patented seeds.