1. write the definition of particulate matter and its 3 classifications depending on the sizes. 2. categorize air pollutants according to the phase and source(human activity) and then write 3 examples for each category. 3. write famous 5 primary and 2 secondary air pollutants. compare the two famous smog disasters in 5 characteristics

The correct answer is clerk, i did the quiz

D. a mountain abd are made by volcanos and tectonic plates

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.