Q: What is the rising and sinking of warm and cooler material called? Choices: - depression - conveyance - diffusion - convection A:
convection

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

Q: Urea, ammonia and uric acid are types of what waste, excreted in different forms by different species? Choices: - fecal waste - methane waste - carbon waste - nitrogenous waste A:
nitrogenous waste