Two lizard populations live on an island one of the populations has over 100,000 individuals on the island

Just about every rocky shoreline in the Galapagos Islands is home to the marine iguana.

These lizards are found throughout the islands, and have population concentrations of up to 4,500 individuals per mile.  Their total population on these islands have been estimated to be between 200,000 and 300,000.

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

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