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Read the passage given below and answer in your own language, the questions that follow: In the concrete jungle, the Yamuna Biodiversity Park (YBP) is like an oasis. A group of scientists is attempting to restore the original ecosystem of the Yamuna flood plains. The park stands on a plot that was almost barren until the team started the uphill task of restoration in 2002. The objective was to preserve the flora and fauna because the species were becoming extinct. However, the experts encountered several difficulties in their work. For one, the Jharoda villagers allegedly illegally occupy some part of the site. Besides, as the area was prone to water logging, the soil’s salt content was very high. To create the wetland, around 2,30,000 cubic metres of soil was dug out of the low-lying area. The extracted soil has been utilised to form mounds in the central portion of the 157-acre park. With a maximum width of about 120 metres, the 1-8 km long, horse shoe-shaped wetland surrounds these landscaped mounds. An arched bridge stands on its narrowest point. The soil was used to landscape the area in such a manner that seepage will go down into the wetland. YBP has a smaller wetland too, and CEMDE plan to create one more. A month ago, DDA allotted an additional 330 acres of “fertile” land for the second phase of the project. Lying north east of the park, the new land extends up to the river front. “There will be a series of wetlands over 80 - 100 acres of the new stretch’. “We will also create grasslands and flood plain forests, which have become extinct due to urbanisation,” says Prof. Babu, the Head of CEMDE. The vegetation will include tiger and lemon grass 90 - 200 cm high, medium grasses 45 - 90 cm in height and smaller varieties that grow 10-60 cm high. At present, about six acres are dotted with as many as 400 varieties of trees including primitive cultivars found along the Yamuna basin. Also being set up is a butterfly park that’ll have 150 species of honey-producing plants. After the wetland, one takes a peep into the medicinal garden, where scores of colourful butterflies flap over a plant. Says Prof. Babu, “Once the grassland is ready, plenty of wildlife will come here on its own.” The 500-odd-acre biodiversity spot in the making is a pilgrimage venue for science students. Delhi University colleges have been asked to visit the park. “It’s going to be a heaven for birds and a paradise for bird-lovers,” says Prof. Babu. “By creating more wetlands (more birds can be attracted), we can turn this area into a bird sanctuary.” The cormorant’s habitat is disturbed (in Delhi). And the darter is rare in Delhi because of habitat restriction. This is the first year that these birds have started nesting here. Between 3.30 - 4 p.m. the bird population goes up to over 400. Their food requirement is two-three-inch long fish, which are available here. (i) Which two difficulties did the experts face in developing Yamuna Biodiversity Park (YBP) ? (2) (ii) What has been done to check the seepage ? (2) (iii) What different varieties of vegetation are proposed in YBP ?(2) (iv) In what sense will the YBP be a pilgrimage for science students ?(2) (v) Which birds have started nesting here ? Why ? (2)

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