Ques:Q: The superior vena cava and the inferior vena cava are veins that return blood lacking what to the heart? Read this paragraph and choose the correct option from the provided answers: The veins that return oxygen-poor blood to the heart are the superior vena cava and the inferior vena cava . The pulmonary veins return oxygen-rich blood from the lungs to the heart. The pulmonary veins are the only veins that carry oxygen-rich blood. Choices: - hemoglobin - carbon dioxide - nitrogen - oxygen A:

Ans:oxygen
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Ques:Q: What is the term for tough protein fibers that connects bones to each other? Read this paragraph and choose the correct option from the provided answers: Ligaments are made of tough protein fibers and connect bones to each other. Your bones, cartilage, and ligaments make up your skeletal system . Choices: - tetons - cords - muscles - ligaments A:

Ans:ligaments
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Ques:Q: What property is the result of force acting on a given area? Read this paragraph and choose the correct option from the provided answers: Pressure is the result of force acting on a given area. It can be represented by the equation:. Choices: - vaccuum - pull - resistance - pressure A:

Ans:pressure
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Ques:Q: The protist life cycle benefits by including what forms of reproduction? Read this paragraph and choose the correct option from the provided answers: Most protists also have a complex life cycle. The life cycle of an organism is the cycle of phases it goes through until it returns to the starting phase. The protist life cycle includes both sexual and asexual reproduction. Why reproduce both ways? Each way has benefits. Asexual reproduction is fast. It allows rapid population growth when conditions are stable. Sexual reproduction increases genetic variation. This helps ensure that some organisms will survive if conditions change. Choices: - asexual and biological - atypical and sexual - ideal and sexual - asexual and sexual A:

Ans:
asexual and sexual
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