Despite contrary evidence, twin studies have led some researchers to believe that one's family environment does not significantly influence personality. true or false?

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?