Ques:Q: The superior vena cava and the inferior vena cava are veins that return blood lacking what to the heart? Choices: - hemoglobin - carbon dioxide - nitrogen - oxygen A:

Ans:oxygen
-----
Ques:Q: What is the term for tough protein fibers that connects bones to each other? Choices: - tetons - cords - muscles - ligaments A:

Ans:ligaments
-----
Ques:Q: What property is the result of force acting on a given area? Choices: - vaccuum - pull - resistance - pressure A:

Ans:pressure
-----
Ques:Q: The protist life cycle benefits by including what forms of reproduction? Choices: - asexual and biological - atypical and sexual - ideal and sexual - asexual and sexual A:

Ans:
asexual and sexual
-----