Collagena. is a protein. b. is important in dense connective tissues forming tendons due to its tensile strength. c. is particularly abundant in muscle cells where it provides elasticity d. a and b only e. all of these

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

Which is a function of vascular tissue? a. to perform photosynthesis b. to transport water and nutrients c. to absorb minerals and sugar d. to interact with soil fungi

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?