The skeleton of a vertebrate is

a. internal and made of bones.

b. made of muscle and very strong.

c. surrounded by a hard shell.

d. controlled by fluid pressure. Reset Selection

What plant grows in pairs of 2 (for an example cherries but cant be cherries)

If a bicyclist travels 30 kilometers in two hours, her average speed is a 15 km/h. b 2 km/h. c 30 km/h. d 60 km/h.

What is the basis for most ecosystems? A. Animals B. Weather C. The sun D. Water

How long ago did oceans form

This system transports blood through the body and heart.

What is the semi-solid food found inside the stomach during digestion called?

Proteins are the building blocks of all the tissues in the body. Which of the following cell organelles are directly responsible for making and packaging proteins?

How could an endocrine system disorder most likely affect the respiratory system? A. It could restrict air flow through the bronchi. B. It could disrupt the rate of respiration. C. t could prevent hemoglobin from binding to oxygen. D.

Which of the following is not transported by the circulatory system? A. Blood B. Food C. Oxygen D. Carbon dioxide Which of the following would not be considered an innate behavior? A. Sucking B. Migration C. habituation D.

What is it called when clouds move to earths surface