During which century did charles darwin come up with his theory?

19th century

Explanation:

Charles Darwin visited Galapagos Islands during his voyage on HMS Beagle in 1831. These islands are the chain of 22 islands located in Pacific Ocean on west coast of South America. Based on his observation during the voyage, he proposed the theory of natural selection in his book named as "On the Origin of  Species by Natural Selection; or, The Preservation of Favored Races in the Struggle for Life" in 1859.

glycolysis

explanation:

glycolysis must occur before any of the other steps can occur.

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science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.