Which statement is true? most rocks are made up of a mixture of minerals. most rocks are composed of a single mineral. rocks do not contain any mineral matter.

We the people of the united states, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defence, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this constitution for the united states of america. according to the preamble which action represents an appropriate role for government

True or falsethe right to privacy is clearly written out in the constitution

Certain gases in air are important natural resources that are used in welding. two of these gases are a. oxygen and argon b. hydrogen and fluorine c. chlorine and sulfur dioxide d. nitrogen and carbon dioxide