Which part of the atmosphere is the highest layer in which planes can fly?

a. stratosphere
b. troposphere
c. mesosphere
d. thermosphere

The vedas were a collection of aryan religious writings t or f

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called

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