What is meaning of bones​

Ihave made a dive then stayed on the surface for a while. after this surface interval my pressure group is k. what is the maximum amount of bottom time available when doing a repetitive to 17/56 feet

Spray-applied coatings must be applied according to transfer efficiency standards using what technologies? a) high volume, low pressure (hvlp) guns b) electrostatic guns c) airless guns d) all of the above

This is science by the way which of the following is an example of an environmental pressure a. the air pressure in the atmosphere b. a lake that is gradually running out of water c. a fight between two members of the same species d. breeding between two members of the same species