Read the following statements and choose the following option: 1. In situ conservation is used when an ecosystem needs to be conserved as a whole. 2. Ex situ conservation is a method where species are conserved outside their natural habitat. 3. The Earth Summit in Rio de Janeiro highlighted the need for global biodiversity conservation. 4. India has 14 national parks and 448 biosphere reserves.

Step-by-step solution

Earth Summit, also known as the Convention on Biological Diversity, was held in Rio de Janeiro in 1992 and called upon all nations to take measures for the conservation of biodiversity and the sustainable utilization of its benefits. The other statements are incorrect because ex situ conservation involves conserving species outside their natural habitat, and in situ conservation is the method used to conserve ecosystems as a whole. Additionally, India has 14 biosphere reserves, 90 national parks, and 448 wildlife s