Answer:
Oxygen was not present on early earth
It is 50% homozygous recessive, and 50% heterozygous
Answer:
where your baby is at least 37 weeks
Explanation:
In cases where your baby is at least 37 weeks, current research suggests that it may be safe to wait 48 hours (and sometimes longer) for labor to start on its own. (But your caregiver may have a different protocol, like 24 hours.)