Tag: protecting our environment

Green plants lose water by the process of transpiration. This contributes a lot towards atmospheric moisture. Thus, green plants have major contribution in precipitation. Due to this, deforestation leads to reduced rainfall. Thus, the correct answer is option C.

Desertification is defined as a process of land degradation due to climatic variations and human activities. Overgrazing is the major cause of desertification worldwide. Other factors are urbanization, overdrafting of groundwater and deforestation. Thus the correct answer is option A.

Animals living in the forest include herbivores and carnivores. The dung of these animals are decomposed by insects living in the soil. This contributes to the fertility of the soil by adding organic matter and nutrients, such as nitrogen, that is trapped by bacteria in the soil. This provides nutrients to the seedlings to grow in forests. Thus the correct answer is option C.

Destroying a forest has many negative effects on the environment. Seventy percent of earth's terrestrial animals and plants live in forests. The most adverse impact is the loss of habitat for millions of species leading to disturbance in the food chain that is an important component of the ecosystem. Thus the correct answer is option A.

Cutting of trees or clearing the forest is called as deforestation. Deforestation not only affects the land from which it is cleared but it also affects the environment. Trees are very important for the environment because they help in reducing pollution by releasing more oxygen. They protect the environment in many ways and hence, cutting of the tree is harmful and affects the environment.

Reforestation is restocking of the destroyed forest by planting new trees. We should plant at least as many trees as we cut. Reforestation can take place naturally also.

Deforestation is the process of removal or the cutting down of the trees. The absence of the trees results in an increase in the concentration of carbon dioxide which causes global warming. The roots of the plants help in holding the soil and deforestation causes soil erosion from the upper layer of the soil. The plants take up the carbon dioxide from the air for photosynthesis. When there are no trees, there is increase in the level of carbon dioxide.

Deforestation is removal, decrease or deterioration of forest cover of an area. It causes shrinkage of fuelwood, reduced timber supply, change in climate, flash floods, soil erosion, siltation, cyclones, drought, desertification, reduced rainfall and destruction of habitat. Thus, the correct answer is option D.

Drought is the condition of shortage of water which affects all life forms. Flood is the condition of the overflow of water on land that can submerged plants, human-made articles and thinning of the ozone layer increases the global warming and climate change which affects the flora and fauna. All these conditions can harm the organisms and their habitat and thus, can threat to the biodiversity.