NCERT Class 6 Environment & Ecology — Chapter 3: Garbage in, garbage out

With reference to the disposal of garbage in landfills, consider the following statements: 1. A landfill is an open low-lying area used to dump both useful and non-useful components of garbage without separation. 2. Once full, a landfill is immediately used for agricultural purposes. 3. Landfill sites are often converted into parks or playgrounds after closure. Which of the statements given above is/are correct?

Consider the following statements regarding the burning of agricultural waste: 1. Burning dried leaves releases oxygen into the atmosphere. 2. Composting converts these wastes into useful manure. 3. These wastes can be converted into useful compost instead of being burnt. Which of the statements given above is/are correct?

Which environmental conditions are most conducive to the survival of redworms in a vermicomposting pit?

Consider the following materials: 1. Vegetable peels 2. Coffee and tea remains 3. Pickles and vinegar 4. Milk preparations Which of the materials given above should NOT be added as food for redworms in a vermicomposting pit?

In the anatomical organisation of a redworm, the structure known as the gizzard is primarily involved in which of the following functions?