Ear "popping" is an unpleasant phenomenon sometimes experienced when a change in pressure occurs, for example, in an airplane. If you are in a two-seater airplane at 3000 m and a descentof 100 m causes your ear to "pop, what is the pressure change that your ear pops at in millimeters of mercury? If the airplane n

Amineral forms from water at the edge of a lake. which statements best describe this mineral? check all that apply. the mineral formed from lava. the mineral formed through evaporation. the mineral formed when hot water cooled. the mineral crystallized from magma. the mineral crystallized from dissolved elements and compounds.

Which statement best explains distribution of natural resources? people tend to settle in locations that have the resources they need for survival. some countries have resources that others lack, so trade between countries becomes vital. fossil fuels come from areas that have mountains and other areas that manufacture synthetic gas. areas with natural resources provide a higher standard of living and better quality of life.

Suggest 3 different reasons why there is an ageing population in the uk .