When you burn wood to generate heat in your house, you are using biomass energy.

Ethanol is biofuel that can be made from corn or sugar cane

Methane gas can be used to create a commonly used fuel known as natural gas

The type of biomass gas produced when garbage rots is methane.

One of the advantages of biomass energy is that it is clean and good for the environment.

A renewable resource commonly used in dendrothermal energy production is coal.

Dendrothermal energy is a renewable source of energy.

One potential drawback  of using dendrothermal energy is afforestation. 

Dendrothermal conversion is the process of converting wood or biomass materials into energy.

In dendrothermal energy production, the role of a biomass boiler is to convert biomass materials into heat energy

Bulges of water are called high tides.

Tidal generators produce steady and reliable stream of electricity.

The tides are rhythmic and constant. 

Tides are caused by the gravitational pull of moon , sun and the rotation of the earth. It is the cumulative effect of all the three factors. 

Tidal generators produce a steady and reliable stream of electricity.