Ques:Q: What is a mixture of eroded rock, minerals, partly decomposed organic matter, and other materials called? Read this paragraph and choose the correct option from the provided answers: Soil is a mixture of eroded rock, minerals, partly decomposed organic matter, and other materials. It is essential for plant growth, so it is the foundation of terrestrial ecosystems. Soil is important for other reasons as well. For example, it removes toxins from water and breaks down wastes. Choices: - loam - sand - sediment - soil A:

Ans:soil
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Ques:Q: What is the most common type of volcano? Read this paragraph and choose the correct option from the provided answers: Cinder cones are the smallest and most common type of volcano. Cinder cones have steep sides like composite volcanoes. But they are much smaller, rarely reaching even 300 meters in height. Cinder cones usually have a crater at the summit. Cinder cones are composed of small fragments of rock, called cinders. The cinders are piled on top of one another. The cinders can be mafic, intermediate, or felsic in composition. These volcanoes usually do not produce streams of lava. Cinder cones often form near larger volcanoes. Most composite and shield volcanoes have nearby cinder cones. Choices: - geyser - block cone - flat - cinder cone A:

Ans:cinder cone
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Ques:Q: Echinoderms have a unique system for gas exchange, nutrient circulation, and locomotion called the water vascular system. the system consists of a central ring canal and radial canals extending along each arm. water circulates through these structures allowing for gas, nutrient, and this? Read this paragraph and choose the correct option from the provided answers: Physiological Processes of Echinoderms Echinoderms have a unique system for gas exchange, nutrient circulation, and locomotion called the water vascular system. The system consists of a central ring canal and radial canals extending along each arm. Water circulates through these structures allowing for gas, nutrient, and waste exchange. A structure on top of the body, called the madreporite, regulates the amount of water in the water vascular system. "Tube feet," which protrude through openings in the endoskeleton, may be expanded or contracted using the hydrostatic pressure in the system. The system allows for slow movement, but a great deal of power, as witnessed when the tube feet latch on to opposite halves of a bivalve mollusk, like a clam, and slowly, but surely pull the shells apart, exposing the flesh within. Choices: - water evaporation - nerve exchange - cell exchange - waste exchange A:

Ans:waste exchange
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Ques:Q: How many electrons does lithium have? Read this paragraph and choose the correct option from the provided answers: Choices: - four - seven - two - three A:

Ans:
three
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