Q: Most air masses form over what two types of regions? Read this paragraph and choose the correct option from the provided answers: Most air masses form over polar or tropical regions. They may form over continents or oceans. Air masses are moist if they form over oceans. They are dry if they form over continents. Air masses that form over oceans are called maritime air masses. Those that form over continents are called continental air masses. Figure below shows air masses that form over or near North America. Choices: - arctic and marine - polar and arctic - marine and tropical - polar and tropical A:
polar and tropical
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Q: What is the sac-like organ of the body that is important for both mechanical and chemical digestion? Read this paragraph and choose the correct option from the provided answers: The stomach is a sac-like organ in which food is further digested both mechanically and chemically. (To see an animation of how the stomach digests food, go to the link below. ) Churning movements of the stomach's thick, muscular walls complete the mechanical breakdown of food. The churning movements also mix food with digestive fluids secreted by the stomach. One of these fluids is hydrochloric acid. It kills bacteria in food and gives the stomach the low (acidic) pH needed by digestive enzymes that work in the stomach. The main enzyme is pepsin , which chemically digests protein. Choices: - gall bladder - kidney - spleen - stomach A:
stomach
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Q: Most arthropods are insects. the phylum also includes spiders, centipedes, and what? Read this paragraph and choose the correct option from the provided answers: Most arthropods are insects. The phylum also includes spiders, centipedes, and crustaceans. Choices: - amphibians - crystals - coral - crustaceans A:
crustaceans
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Q: What makes blue cheese blue? Read this paragraph and choose the correct option from the provided answers: Have you ever eaten blue cheese? Do you know what makes it blue? You guessed it. A fungus. For certain types of cheeses, producers add fungal spores to milk curds to promote the growth of mold, which makes the cheese blue. Molds used in cheese production are safe for humans to eat. Choices: - mites - rot - rennit - fungus A:
fungus
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