Answer:During pregnancy, red blood cells from the unborn baby can cross into the mother's blood through the placenta. If the mother is Rh-negative, her immune system treats Rh-positive fetal cells as if they were a foreign substance. The mother's body makes antibodies against the fetal blood cells
Explanation:
The answer is B. because lipids can make the body warmer :)))
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The first one answer is to be increased and the second one answer is to be decreased
Across 5: predation
across 6 hominid
down 3 : Distribution
down 9 : glaciations