formed or developed from something else; not original

formed or developed from something else; not original

formed or developed from something else; not original

added or derived from something outside; not inherent

added or derived from something outside; not inherent

added or derived from something outside; not inherent

energy derived from sources that do not use up natural resources or harm the environment

energy derived from sources that do not use up natural resources or harm the environment

energy derived from sources that do not use up natural resources or harm the environment

energy derived from sources that do not use up natural resources or harm the environment