Which type of seismic wave travels through earth until it reaches earth's
surface, but cannot be felt?

Suggest two reasons why irrigation is important for human development of the desert (4 marks)

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

With these question would be nice i needs them in a hurry which nation leads eastern europe in nuclear energy usage? a ukraine b lithuania c slovakia d solvenia which eastern european nation is popular with skiers? a czech republic b estonia c bulgaria d none are