Two Paragraph

1st: Organic Soil Paragraph

The addition of organic matter improves soil in several ways. The soil can benefit from it in three main ways. Fristly, it can improve the soil structure. If the soil is too hard, the organic matter will loosens it. Also, it can give the sandy soil holding ability, which is very important for the plants. Secondly, the addition of organic matter increases the ability to retain moisture. It can act as a sponge or reduce erosion which are all helpful to retain moisture of soil. Last but not the least, the addition of organic matter can raise level of fertility of soil. It works in two ways. One is to breaks organic matter down and the second is builds up humus. Both ways can raise the level of fertility. In conclusion, the incorporation of organic matter into the soil is an important farming practice that can significantly improve the productivity and long-term viability of agricultural land.



2nd Solar Energy Paragraph


Solar energy as a heat source for homes has potential, but there are some problems that need to be resolved. The benefits of the solar energy is very easy to find. Compared to the gas or electrical enengy, the solar energy is unlimited and nonpollution energy, all of us can use it without promission. Also, this resource is not controlled by humans, so the people would not worry about the property of this resource of energy. Although solar energy has so many benefits, it still meets some probelms. The construction of collection devices cost very high so the people who want to use this energy has to pay for a large bill first. Moreover, the collection of the energy is not perfected, the sun gives so much energy but we can only collection one small part of it. Also the collectors are not very sightly is another shortcoming. In conclusion, to use solar energy for homes is very good choice but needs more thinking.