Which scientist created the most modern classification hierarchy that we use today?

 Linneus Carolus

Explanation:  There are millions of species on the earth it very difficult to name them without being confused due to their appearance and characters.

There must be certain system that should be used for differentiate the organism based on the characters.

Linneus Carolus is known as the father of taxonomy because he gave a system of naming the organism in 1700s and we still use this system of naming the organism. He gave bionomial nomenclature which is still used for classification and naming.

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

i believe the answer is snake.