Final answer:
The population of 7 billion affects unemployment, agriculture, and clean water.
Step-by-step explanation:
The population of 7 billion is likely to affect all three of the given options: number of people who are unemployed, amount of land for agriculture, and amount of clean water.
The increase in population puts pressure on the job market, making it more competitive and leading to a higher number of unemployed individuals.
More people require food, which leads to a higher demand for agricultural land. This can result in deforestation and destruction of natural habitats.
Increasing population also raises the demand for clean water, and can lead to shortages or contamination of water sources.
Learn more about Population and its impact on various aspects