Examlex
Pregnancy occurs when the morula stage implants in the uterus.
Ozone
A molecule composed of three oxygen atoms, found in the Earth's stratosphere, where it absorbs and protects against harmful ultraviolet radiation.
Radon-222
A naturally occurring radioactive gas produced by the decay of uranium in the Earth's crust, known for its health risks, particularly lung cancer, when accumulated in buildings.
Air Pollutant
Substances in the air that can have harmful effects on the health of living creatures or the environment, including gases, particulates, and biological molecules.
Global Warming
The ongoing rise in Earth’s surface temperature, primarily due to the emission of greenhouse gases from human activities, leading to climate change and associated impacts.
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