This is real simple.
Try to pay attention.
Everything in the economy either moves, is manufactured, or consumes things that are manufactured..
Are you with me so far?
Transportation, and manufacturing create carbon, and will be taxed.
The price of everything will go up.
The purchasing power of everyone will go down.
Less goods and services will be bought in all sectors, because (stay with me here) everything in the economy either moves, is manufactured, or consumes things that are manufactured.
The economy is damaged.