Other than poaching, what are the possible reasons for the decline in the population of Ganges River Dolphins? 1. Construction of dams and barrages on rivers 2. Increase in the population of crocodiles in rivers 3. Getting trapped in fishing nets accidentally 4. Use of synthetic fertilizers and other agricultural chemicals in crop-fields in the vicinity of rivers Select the correct answer using the code given below.

Biodiversity forms the basis for human Existence in the following ways : 1. Soil formation 2. Prevention of soil erosion 3. Recycling of waste 4. Pollination of crops Select the correct answer using…

Arrange the following environmental conservation events in chronological order of their commencement: 1. Project Tiger 2. Project Elephant 3. Wildlife Protection Act 4. Biological Diversity Act Selec…

Two statements are given below, one is Assertion (A) and another is Reason (R). Assertion (A) : The Himalaya have rich biodiversity. Reason (R) : The Himalaya have varied climatic conditions and alti…

Which of the following can be threats to the biodiversity of a geographical area? 1. Global warning 2. Fragmentation of habitat 3. Invasion of alien species 4. Promotion of vegetarianism Select the c…

Which of the following statements about causes of biodiversity loss is/are correct ? 1. Habitat loss and fragmentation are the most important cause driving animals and plants to extinction. 2. Human…