All of the following are true regarding critical periods EXCEPT:
1.a critical period is an interval of time when cells are genetically programmed to multiply.
2.sufficient nutrients must be available for cell multiplication to occur.
3.if nutrients are not available the developing organ will be impaired.
4.if nutrients become available after the critical period the organs will grow to full size.
Question 2
Preterm infants are infants born:
1.at or before 40 weeks of gestation.
2.at or before 39 weeks of gestation.
3.at or before 38 weeks of gestation.
4.at or before 37 weeks of gestation.
(b) during dry periods they lose their leaves and blossoms.
Apparent and True Orbits of Alpha Centauri.
Mars's average distance from the Sun is roughly 230 million km (1.5 AU) and its orbital period
Periods of Purple Crying
When young infants hold objects for a long period of time they eventually become habituated to them.
Anterosuperior view of true pelvis (blue)