one physical property of metals is malleability what does this mean? shuny and reflective or can be harmered or ralled into flat sheets or can be drown into long wires​

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse