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?

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

i don't know. if i were you, i would search it up online : d