Could someone please help me with these two questions please thank you!

Which term defines one's age as measured by how well the body is working? chronological age biological age social age mental age

Disinfection of countertops, metal, and hard plastics is not best accomplished by the use of because it's very corrosive to hard surfaces. a. alcohol b. a glutaraldehyde solution c. an ultrasonic cleaner d. a phenol compound

The effort made by the mother's body to move the baby from the uterus and through the birth canal is called . is it 1 gestation, 2 labor or 3 conception