Q: Q: Warm water from the equator mixes with cold water from where? Read this paragraph and choose the correct option from the provided answers: Water flows through all the world's oceans. Warm water from the equator mixes with cold water from the poles. The mixing of warm and cold water makes the water temperature moderate. Choices: - the tropics - the oceans - the continents - the poles A:
A: the poles

Q: Q: Thylakoid membranes contain molecules of what green pigment used in photosynthesis? Read this paragraph and choose the correct option from the provided answers: The structure of a chloroplast shows how membrane and molecular architecture helps life processes. A chloroplast consists of thylakoid membranes surrounded by stroma. The thylakoids stack on top of each other, like a stack of pancakes. The thylakoid stacks arrange chlorophyll, accessory pigment molecules, and photosynthetic proteins to capture sunlight and allow a concentration of ions within the sacs. You can see the green color of the chlorophyll. You cannot see the electron carriers, sequenced within the sac membranes, but their arrangement helps harvest small amounts of energy from excited electrons. The thylakoid membranes contain molecules of the green pigment chlorophyll. Choices: - carbonate - sodium - copper - chlorophyll A:
A: chlorophyll

Q: Q: Human culture is related to evolutionary theory in the discipline of what? Read this paragraph and choose the correct option from the provided answers: Choices: - astrology - psychopathology - ethnology - sociobiology A:
A: sociobiology

Q: Q: Ionic liquids heating a salt to its melting point produces a what? Read this paragraph and choose the correct option from the provided answers: Molten Salts and Ionic Liquids Heating a salt to its melting point produces a molten salt. If we heated a sample of solid NaCl to its melting point of 801C, for example, it would melt to give a stable liquid that conducts electricity. The characteristics of molten salts other than electrical conductivity are their high heat capacity, ability to attain very high temperatures (over 700C) as a liquid, and utility as solvents because of their relatively low toxicity. Molten salts have many uses in industry and the laboratory. For example, in solar power towers in the desert of California, mirrors collect and focus sunlight to melt a mixture of sodium nitrite and sodium nitrate. The heat stored in the molten salt is used to produce steam that drives a steam turbine and a generator, thereby producing electricity from the sun for southern California. Due to their low toxicity and high thermal efficiency, molten salts have also been used in nuclear reactors to enable operation at temperatures greater than 750C. One prototype reactor tested in the 1950s used a fuel and a coolant consisting of molten fluoride salts, including NaF, ZrF 4, and UF4. Molten salts are also. Choices: - table salt - plasma - gas - molten salt A:
A: molten salt