In today's world, the carbon footprint is a growing problem, which affects the global climate and affects all living things. To solve this dilemma, exploring the source of alternative energy is the most important way.

There are many types of alternative energy sources. One is solar energy, which is endless and inexhaustible. The light that shines on it can be converted into electricity and heat, which can be applied to residential and industrial buildings. With photovoltaic panels, which are exposed to the light of the sun and turned into electricity, which can be used for household needs. And there is no carbon emission, which is clean and clean.

Wind energy is also a good alternative. When the wind is moving, the windmill will produce capacity. Coastal land, mountain top domain, the wind is strong, it is appropriate to build a wind farm. Wind energy generates electricity, no fuel is required, carbon emissions are zero, air pollution is not polluted, and the environment is clean.

Water energy cannot be ignored either. Dams are built to intercept flow, water potential is surging, and chemical mechanical energy is electrical energy. On the big rivers, power stations stand, which can supply a wide area and rely on industry and people's livelihood. And when it is in operation, less carbon is released, which is beneficial to the ecology.

Furthermore, biomass energy also has potential. The waste of agriculture and forestry, the filth of humans and animals, through the method of transformation, can be used for fuel energy. Biomass burning, compared with the traditional, carbon emissions are slightly reduced, and the source is widely available, which is more advantageous in rural areas.

All kinds of alternative energy can reduce carbon footprints. However, when promoting, there are also problems. The high cost, the difficulty of technology, and the lack of facilities all need to be solved. However, for future generations and for the environment, we should devote ourselves to breaking down all obstacles and promoting alternative energy to restore peace to the world and ensure the long-term safety of the earth.