Answer:
cells make up tissues, which make up organs. organs make up organ systems which make up organisms
Explanation:
C because oxygen was a byproduct of photosynthesis and proved to be EXTREMELY important in the atmosphere.
Preterm labor
Bleeding in the first trimester
Chromosomal anomalies
Women also have a higher risk of developing certain complications during pregnancy, such as gestational diabetes, preeclampsia, premature detachment of the placenta (premature separation of the placenta and uterine wall) and placenta previa (when the placenta moves to the lower part of the uterus, covering the cervix partially or completely).
