Most boys ages 8 to 12 years of age spend an average of 4 hours per day playing video games

Third-hand smoke exposure is about a person encountering smoke residue on surfaces rather than breathing in second-hand smoke exhaled by another person.

a. true b. false

Our sleep–wake cycle follows a(n) __________ rhythm

a) infradian b) diurnal c) circadian d) ultradian