Among application of energy efficiency in schools is only use appliances that have a 5 star energy efficiency label.

Give another two applications that you can practice.

Green energy is an alternative energy that can be replenished within the human life span. Examples of green energy are

Wastewater is water that has been used which might be mixed with other substances such as human waste, food waste, oil, soap and chemicals. Example of domestic (home) wastewater are:

Motorised vehicles using fossil fuel release greenhouse gases.

Thus a city council limits the number of cars entering the city as part of their efforts in a 'Green City' campaign.

State two advantanges of this initiative.

Every year, a high number of wildlife animals become roadkill. Which of the following is not a way to prevent this from happening?