Examlex
Oxygen first began to accumulate in Earth's atmosphere as a result of .
Ventilate
To provide with a supply of fresh air by allowing air to flow through a space, often through natural or mechanical means.
Respire
The process by which living organisms take in oxygen and release carbon dioxide, involved in energy production.
Gas Exchange
The biological process through which organisms, such as plants and animals, exchange gases with their environment, involving oxygen and carbon dioxide.
Book Lungs
Respiration organs found in arachnids, such as spiders and scorpions, consisting of stacked plates resembling the pages of a book.
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