Which is a pollutant associated with high-tech gadgets in landfills? A. Chromium

B. Carbon dioxide

c. Hydrogen

d. Steel

Of the pollutants that form acids in the atmosphere, which is easiest to reduce? a. sulfur dioxide b. nitrogen dioxide c. ozone d. carbon monoxide

Which element provides strength to the exoskeleton of clams and oysters

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point