Snakes and similar animals are members of a group called reptiles how do reptiles differ from other animals?

a. they are cartilage instead of bones
b. they divide their time between living on land and living in water
c. they have skin covered with scales
d. they regulate their own internal temperature

How does the molecular clock work? a. it analyzes the brain functionality of two different species. b. it examines and compares the physical characteristics of two different species. c. it illustrates relationships between two different species. d. it compares the number of mutations that exist in the dna of two different species.

Aboy with an extra x chromosome probably has which of the following syndromes?

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above