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An air bubble underwater has the same pressure as that of the water.As the air bubble rises toward the surface (and its temperature remains constant) ,the volume of the air bubble
Placenta
An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing fetus while removing waste.
Developing Fetus
A developing fetus refers to an unborn offspring in the process of growth and development inside the uterus, from the embryonic stage (following implantation) through to birth.
Teratogen
Any agent or substance that can cause developmental abnormalities or birth defects in an embryo or fetus when exposed during pregnancy.
Nicotine
Nicotine is a stimulant drug found in tobacco plants that affects the nervous system and is both addictive and potentially harmful.
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