Answer the following questions: (a) List any two uses of air.
(b) How is air pollution harmful to us?

Explanation:

uses of air is for breathing,for plant to grow

and air pollution can cause global warming that is really harmful

(a) Uses of air

photosynthesis.

Supplier of energy.

Combustion

vertical merger is the term used for the joining of two or more firms involved in different stages of producing the same good or services.

explanation:

fir trees are found in areas with cooler climates. fir trees have needles for leaves and remain green year-round.