Environment – Medium Level – GK Questions

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environment medium MCQ Ecology and Ecosystems UPSC, SSC

The term 'Keystone Species' refers to a species that:

  1. Has the largest population in an ecosystem
  2. Is the most endangered species
  3. Has a disproportionately large effect on its environment relative to its abundance
  4. Is found only in one geographical location
environment medium MCQ Ecology and Ecosystems SSC, Railway

Which of the following represents the correct sequence of a terrestrial food chain?

  1. Grass → Wolf → Deer → Buffalo
  2. Grass → Deer → Wolf → Bacteria
  3. Grass → Snake → Insect → Deer
  4. Grass → Bacteria → Deer → Wolf
environment medium MCQ Renewable Energy UPSC, SSC

Tidal energy is a form of hydropower that converts the energy of tides into electricity. Tides are primarily caused by:

  1. Earth's rotation and solar winds
  2. Gravitational pull of the Moon and Sun
  3. Ocean currents and underwater volcanoes
  4. Thermal expansion of ocean water