Many state and local authorities are requiring cars to have their emissions tested each year. why would lawmakers need to consult with scientists and mechanics before making these laws?

littering streams           is the answer

the correct answer would be 6 feet.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )