The permanent destruction of forests to use the land or trees is known as deforestation. Deforestation takes place due to a number of reasons like natural causes and human activities. The main cause for deforestation is overpopulation. Overpopulation results in an increase in global needs which leads to expansion of infrastructures, industries, agricultural needs and thus deforestation. Other reasons for deforestation are infrastructure expansion , logging for wood based industries, farming, mining etc. Deforestation causes drastic changes in the environment. The environmental problems which results from widespread deforestation include climatic changes,loss of biodiversity, flooding, increase in greenhouse gas emission, acidic oceans, air and water pollution etc. Deforestation results in global warming. Planting trees reduce the effects of deforestation by preventing soil erosion and pollution. The other ways to lessen the effects of deforestation includes recycling and using of recycled products. Reduce the usage of paper and use wood alternatives like hemp, bamboo, wood composites etc for construction and remodeling products. Also we can raise awareness in the community against deforestation through campaigns
C) As hydrilla is aquatic in nature, the roots do not have to search for water, and there is no need for xylem to absorb water because the plant is surrounded by water.
