Answer:
Marijuana has a reputation as a relatively harmless drug, but researchers are learning more and more about the effects it may have on the brain.
Explanation:
two balls until they are out
Brain injury<span> are typical of children born with fetal alcohol syndrome (fas).
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Explanation:
High levels of stress especially chronic stress can lead to health problems to the fetus. The health problems would most likely be heart disease. If in chronic stress during pregnancy this could also lead to the baby being conceived before the limit of 9 months.
Answer:
yes
Explanation:
first is by the atrioventricular valve and the second is by the semi-lunar valve
