Is the world overpopulated or underpopulated? While we worry about there being too many people for the planet to support, we can also worry about how fewer people in a given place may affect the economy, what may happen when there are...

Population statistics are like crystal balls -- when examined closely, they can help predict a country's future (and give important clues about the past). Kim Preshoff explains how using a visual tool called a population pyramid helps...

Pupil outcome: I can interpret and analyse population pyramids. Key learning points: - A population pyramid shows the age and gender balance for a country. - A wider base on a pyramid means that there is a high birth rate. - The taller a...

Pupil outcome: I can understand the links between levels of development and demography. Key learning points: - Countries at different levels of development have differences in their demographic characteristics. - The different...

It describes the role of biological agents for controlling pests. It describes genetically modified organisms (using Bt microbe) and their uses as biocontrol agents.