TH3_revision chapter 8.1-8.3

TH3_revision chapter 8.1-8.3

ecological footprint is

1. the effect you have on the planet
2. the population rate
3. another word for climate change
4. the use of green energy

What is the enhanced greenhouse effect?

1. Emissions of extra CO2 in the atmosphere
2. A sun shining on a greenhouse
3. Extra oxygen in the atmosphere
4. Sun rays on the windows

natural greenhouse effect

enhanced greenhouse effect

too much co2

global rise of 2 degrees 

climate change

whichout this it would be -18 on earth

sea level rise

natural warming effect

Sun as the engine

human as engine

Natural population growth

Emigration rate

Birth rate

Death rate

Immigration rate

Migration balance

Total population growth

Population growth is uneven. Where does the population grow a lot, and where doesn't the population grow as much.

Population growth

• Rich countries: low population growth. A lot of population ageing.  
• Poor countries: high population growth. Because of the many births, also a relatively young population. 
• Because of the population explosion: a lot of demographic investments. 

What migrationflows do we see 1. within countries, 2. between countries?

Migrationflows

• Within countries: rural to urban
• Between countries: from poor to rich countries, or from unsafe to safe countries. 

The poorest countries have a .............. death rate

1. high
2. low

The richer the country, the .............. the birth rate

1. higher
2. lower

There is enough food on earth to feed everyone. Why is there then a food crisis?

Food crisis

1. World population is growing rapidly. More and more food is needed.
2. The distribution of food is unequal.
3. The rise in welfare causes a change in eating habits.
4. Rich countries want to change to sustainable energy (bio-ethanol)