Dựa trên ví dụ thực tế hãy phân tích mối quan hệ giữa cơ sở vật chất –kỹ thuật du lịch và tài nguyên du lịch?

Tides are caused by a differences in the gravitational force of the sun at different points on earth. differences in the gravitational force of the moon at different points on earth differences in earth’s gravitational field strength at different points on earth’s surfac fluctuations in the gravitational attraction between earth and the moon.

Why do u think kenny is afraid when he realizes that the reading he has chosen to do will be for byrons calss? what happens after the reading that surprises kenny?

What is a social problem that affects your life? how does it affect you, your family, and/or your community?