Tiny sea creatures that live in the shallow, warm and salty waters of the sea and secrete calcium carbonate.

1. Coral polyps
2. Zooplankton
3. Coral Reef
4. Phytoplanktons

The Western Plateau in Australia is composed of

1. Sandstone
2. Granite
3. Marble
4. Basalt

Which is not a condition for an Artesian well.

1. Saucer shaped aquifer
2. Porous rocks between non porous rocks
3. Adequate rain
4. Snow-capped mountain

The latitude that passes through the middle of Australia

1. Antarctic Circle
2. Tropic of Capricorn
3. Tropic of Cancer
4. Equator