Correct Option (c)
Statements 3 and 5 are correct.
- Statement 3 (Potable fresh water): The passage explicitly states that "efforts to increase the production of food and fibre have decreased the ability of some ecosystems to provide clean water". This directly indicates an adverse effect on the availability of potable fresh water due to human activities driven by population expansion.
- Statement 5 (Biodiversity): The passage notes that "efforts to increase the production of food and fibre have decreased the ability of some ecosystems to provide clean water, regulate flooding and support biodiversity". This highlights an adverse impact on biodiversity as a consequence of ecosystem modifications.
Incorrect Options:
- Statement 1 (Spiritual fulfilment): The passage lists spiritual fulfilment as an ecosystem service but does not provide any information or evidence to suggest that expanding human population has an adverse effect on it.
- Statement 2 (Aesthetic enjoyment): Similar to spiritual fulfilment, aesthetic enjoyment is mentioned as an ecosystem service, but the passage does not indicate any adverse impact on it resulting from the expanding human population.
- Statement 4 (Production of food and fibre): The passage states that the rapidly expanding human population has "greatly modified the Earth’s ecosystems to meet their increased requirements of some of the goods and services, particularly food, fresh water, timber, fiber and fuel". It also refers to "efforts to increase the production of food and fibre". This indicates an increase in the production of food and fibre, rather than an adverse effect.