What do ligaments hold together in a joint?
a. cartilage and bone
b. muscles
c. bone and muscle
d. bones

How can an organ, such as the lungs, work for multiple body systems?

First dropdown options: a. runoff b. condensation c. evaporation second dropdown options: a. photosynthesis b. transpiration c. sweating third dropdown options: a. raindrops b. clouds c. animals

What are the subsystem of the earth