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organs of gaseous exchange in many animals that live in water.
animals that live socially or in colonies and perform certain tasks for the good of the colony...
the use of modern technology to manipulate living organisms to obtain products from them that...
the blood vessel that carries blood from the digestive tract to the liver.
microscopes that do not rely on light to produce images. They are used to study the internal...
mass extinction event of 65 million years ago, in which about 85% of all species on Earth died...