What is responsible for telling cells how to behave

Cellular differentiation and signaling

Explanation:

Cells specialize in their functions due to the process of differentiation, transforming embryonic cells into new cells with specific morphology and physiology.

The behavior of cells for different functions is due to gene expressions and also thanks to receptors on the surface and inside the cell.

These receptors bind to signaling molecules, establishing communication between the nervous system and the others, ensuring the specificity of cells.

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.

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explanation: