Carbon dioxide is a colorless, odorless gas. why is it considered a pollutant

What does it mean for a cell membrane to be selectively permable

A60-tooth gear is connected to a 72-tooth gear. if the smaller gear turns 12 times, how many turns does the larger gear make?

Asea turtle has washed up on a remote section of a beach. this known as a stranding occurs when a dead, sick or injured sea turtle washed up on the shoreline. which statment best explain why stranding should be reported immediately to local authorities