- Created by: Nefertiti O'hene
- Created on: 15-05-11 21:33
World population& distribution.
Population is the amount of any living thing in an area.
The distribution of people throughout the wrold is uneven.
Sparsly populated; not many people living in area.
Densly populated; lots of people living in an area.
A resource is something that we need in order to live.
Birth rate- no. of babies born in every 1000 people per year.
Death rate- no. of people who die in every 1000 people per year.
Natural increase- birth rate minus death rate per every 1000 people per year.
High undernourishment; China, Russia, somalia, Mexico& Indonesia.
Low undernourishment; Canada, United states of America, Australia, United kingdom& Argentina
Renewable& non-renewable resources
Natural resource- people can't make. Eg. Oil& water
Man-made- people can make. Eg. T.V, Laptop& Processed food.
Renewable- can be used over& over again. Eg. the sun, wind& rain
Non- renewable- can be used only once. Eg. batteries, food& diamond.
Fossil Fuels& global warming
Gas& oil; Plankton lived years ago, they died&sank to the bottom of the sea. The plankton were pushed further to the bottom of the sea. Plankton were heated& pressurised so much it turned in rock& then gas& oil.
Coal; Trees& plants live years ago, they died& rotted underground& pressed by rock& minerals.Vegetation AKA peat dries up & turns into coal. Mines are there so coal can be dug up.
Gases& oil are found close together. Microbes are broken down to produce methane.
Fossil Fuels are being burnt, more CO2 is being produced& released into our amptoshere and damages the O-Zone layer.
Solar, wind, wave & hydroelectric are all types of renewable energy.
Solar energy; the sun is used for electricity via solar panels.
Wind energy; wind is used for electricity via wind turbines& farms.