Proper attention to a well-balanced diet and healthy lifestyle can improve the chances of positive birth outcomes. Conversely, ingestion of agents that cross the placental barrier and can cause harm to the developing fetus should be avoided. Determine whether each practice should be included or avoided to ensure a healthy pregnancy for both the mother and baby.

Both practices are used for normal pregnancy.

Explanation:

Both practices i. e. balance and nutritive diet and avoid ingestion of harmful substance for fetus are used for a healthy pregnancy because during pregnancy, the female require more energy for herself and for the baby so balance diet is very necessary during pregnancy. There are some harmful substances which causes damage to the fetus where baby is present so avoid ingestion of such type of substances make a healthy pregnancy.

the answer is nerve impulses.

good