Cats are most closely related to which of the following animals?
OPTIONS:
- crocodiles
- whales
- frogs
- penguins

whales

A scientist studies the remains of two extinct animals to learn more about how they lived. She determines that one animal was a carnivore and the other was an herbivore. Which of the following did the scientist most likely compare to make this conclusion?
OPTIONS:
- the number of bones in the animals
- the size of the animals
- the body covering of the animals
- the skull of the animals

the skull of the animals

The main function of hormones in the human body is to
OPTIONS:
- identify and destroy microbes
- regulate body functions
- transport blood to cells
- store energy
regulate body functions