Population and the environemnt

What is population Distribution?

The pattern of where people live.Some areas have high concentration while other have sparse popuations

What are the main factors affecting population distribution?

Climate

Soils

Water availability

resourses

What is population density?

The population of an area divided by its size,usually per km2

Why do polar regions have low population density?

Extreme climate,limited food production,low economic opportunities

Why did it take so long to reach 1 billion?

Growth was limited by Famine,disease,war and poor medecine

What has happened to global population since 1950?

It has increased to over 8 billion

Why has the population grown rapidly in the last 70 years?

Advances in medecine

Improved hygine and santitation

Better food production

Longer life expenxtency