There are many types of rat snake in the world. The table below shows two types of rat snake. The different types of rat snake have evolved from similar ancestors. The rat snakes have evolved to to suit their environments. Explain how the Japanese rat snake evolved to be different from the Texas rat snake. – 7067

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1. There are many different colours of snakes.
   Some shades of green match the grassy environment in Japan better than others.
   Snakes that blend in are harder for predators to spot, so they avoid being eaten.
   Being camouflaged also helps them catch more food.
   The snakes that survive can breed and pass on the genes for their green colour to their offspring.
   Over generations, more snakes will have this shade of green because it helps them survive and reproduce.

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