Sources of Renewable energy-
1. Biomass (Wood, forest and agricultural wastes, domestic sewage, industrial waste)
2. Solar Energy (Photo-voltaics and Solar Thermal)
3. Wind Energy (wind turbines)
4. Hydro Power (Rivers, waves and tides)
5. Geothermal Energy (This is the energy tapped from the heat inside the earth)
Water is also a renewable resource, as is wheat, rice, potatoes and other crops.
An ecological or carbon footprint measures how much of the planet's resources you use, and converts this to the amount of land needed to provide the resources and assimilate your waste. It is measured in global hectares (a hectare is about the size of a soccer field). It includes:
- The amount of building materials you use in your home and workplace
- The amount of water you use in your home, workplace and garden
- The fossil fuels (oil, coal, wood and natural gas) needed :
- to provide the power to run your home and workplace
- to bring your food from all over the world
- to power your vehicles and transport
- to carry away and dispose of your waste.
A carbon footprint is the amount of carbon dioxide that one person creates and uses with all the things he or she does.
It is how much damage on the environment that something has. The carbon footprint for a bottle of water would add up the negative environmental impact of manufacturing plastic bottles and truck emissions for delivering the water. Your house would have a carbon footprint.
There are websites that help you determine carbon footprints
A person's carbon footprint is defined by looking at how much of what they do in their lives contributes even a small amount to global warming. Such things include recycling, driving where it is possible to walk and not switching off house lights. We can reduce our carbon footprint by being more ecologically friendly.
Carbon footprint is a measure of the impact our activities have on the environment, and in particular climate change. It relates to the amount of greenhouse gases produced in our day-to-day lives through burning fossil fuels for electricity, heating and transportation, food etc.
You cannot stop it but some plans developed by governments and international organizations with the help of NGOs, seek to reduce the causes and slow down the process