Solve these clues to fill the grid.
- A group's customs, art and way of life
- 4 Across
- An arbitrary sign that has acquired a conventional significance
- 5 Across
- A society in an advanced state of social development
- 7 Across
- The angular distance between a point on any meridian and the prime meridian at Greenwich
- 10 Across
- The 3rd planet from the sun
- 11 Across
- A large mass of land projecting into a body of water
- 13 Across
- A group of people having a religion, ethnic, profession
- 15 Across
- The number of inhabitants in a given place
- 1 Down
- To move from one country or region to another and settle there
- 2 Down
- Migration into a place
- 3 Down
- The natural world around us
- 6 Down
- An imaginary line around the Earth parallel to the equator
- 8 Down
- Tool for weighing things; also a set of musical notes
- 9 Down
- An imaginary line around the Earth forming the great circle that is equidistant from the north
- 12 Down
- A man-made object taken as a whole
- 14 Down
- Accepted or habitual practice (plural)
- 15 Down