If the ratio of air to gasoline (petrol) entering a car engine is reduced then the amount of air pollution caused by oxides of nitrogen emitted in the exhaust gas is lowered. however, the concentration of two other air pollutants is increased. identify these two pollutants and explain how they aris

2points why do scientists need governmental funding? o a. government politicians ask all the important scientific questions. o b. scientists have to pay taxes to the government on the money they make. o c. the cost of doing scientific research can be very high. o d. the government is controlled by scientists. submit

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

What metric units would you use to measure the thickness of a key