In which type of economy do people grow crops for their own use?

Why does less erosion & more deposition take place on the outside bank of a meander?

Wegeners theory of continental drift states that the continents have changed throughout history while the theory of plate tectonics

Afootpath is to be constructed in a park in the shape of a parallelogram. when a coordinate plane is laid over a map of the park, the vertices of the footpath are (-4,2) (8,2) (11,7) and (-1,7). what is the perimeter of this path