Will give a brainlestwhich is not a method of decreasing air pollution? using cars that get lower gas mileageburning unleaded gasolineputting catalytic converters in carsputting scrubbers on smokestacks

using cars that get lower gas mileage

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.