Q: What tool, used to locate underwater objects, utilizes ultrasound in a way that is similar to echolocation? Choices: - GPS - radar - scanning - sonar A:
sonar

Q: What property of fluids causes something to stay on or near the surface of water? Choices: - density - strength - weight - buoyancy A:
buoyancy

Q: Q: The variation in a sample can be represented by what quantity, which means the total spread of values? Choices: - variety - mode - median - range A:
A: range

Question: Q: One of the early signs of cell disease is this "leaking" of what into the body cells? Choices: - proteins - potassium ions - glucose - sodium ions A:
Answer: sodium ions

*Question*
Q: Like all tetrapods except birds and mammals, frogs possess a heart with what structure? Choices: - One Chamber - four chambers - eight chambers - three chambers A:
**Answer**
three chambers

Q: Q: Lacking blood vessels, nerve endings, or glands, the epidermis is the outer layer of what? Choices: - liver - brain - lungs - skin A:
A: skin