Question 4

metals can be used as wire because they are

a)alloys

b)ductile

c)metallic

d)shiny

Answer:   B)ductile

Most of the metals has property called ductility, this property helps the material to drawn into wires.

Explanation:

Ductility is the property of material which helps to drawn into wires. These ductile materials are not broken when the metal is hammered instead these stretch into wires.

The ductility of the metal varies by changing the alloy constituents. If the carbon content is increased in the metal ductility of the metal decreases.

Some of the metals which has ductility property are gold, copper, silver, erbium and more others.

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

rain is the best answer