The structure that protects and encases the lungs and heart of a human is shown labeled with the letter
a. y
b. z
c. w
d. x

Starting at the smallest, most simple level and working your way up to the most complex, explain how the following terms are connected. note-these terms are not in order molecules, atoms, organism, tissues, cells, organ systems, organs

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

Suppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer