Answer:
B) unlearned actions that exist consistently throughout a species
A medicine is a chemical substance that is used to treat, prevent or diagnose a disease.
Answer: Before about week 8 of pregnancy, a doctor may refer to the fetus as an embryo. The heart of an embryo starts to beat from around 5–6 weeks of pregnancy. Also, it may be possible to see the first visible sign of the embryo, known as the fetal pole, at this stage.
Its classified as an additcive drug.
it crosses the blood-brain barrier.
there is a high risk of developing lung cancer.
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