Ques:Q: Which generation of a plant is generally larger and longer-lived? Read this paragraph and choose the correct option from the provided answers: One of the two generations of a plant's life cycle is typically dominant to the other generation. Whether it's the sporophyte or gametophyte generation, individuals in the dominant generation live longer and grow larger. They are the green, photosynthetic structures that you would recognize as a fern, tree, or other plant (see Figure below ). Individuals in the nondominant generation, in contrast, may be very small and rarely seen. They may live in or on the dominant plant. Choices: - main generation - effective generation - alpha generation - dominant generation A:

Ans:dominant generation
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Ques:Q: Without what food chain component, organic wastes and dead organisms would pile up everywhere, and their nutrients would no longer be recycled? Read this paragraph and choose the correct option from the provided answers: Decomposers are heterotrophs that break down the wastes of other organisms or the remains of dead organisms. When they do, they release simple inorganic molecules back into the environment. Producers can then use the inorganic molecules to make new organic compounds. For this reason, decomposers are essential to every ecosystem. Imagine what would happen if there were no decomposers. Organic wastes and dead organisms would pile up everywhere, and their nutrients would no longer be recycled. Choices: - acids - probiotics - nitrates - decomposers A:

Ans:decomposers
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Ques:Q: The temperature at which the individual ions have enough kinetic energy to overcome the attractive forces that hold them in place is called? Read this paragraph and choose the correct option from the provided answers: The Relationship between Lattice Energies and Physical Properties The magnitude of the forces that hold an ionic substance together has a dramatic effect on many of its properties. The melting point, for example, is the temperature at which the individual ions have enough kinetic energy to overcome the attractive forces that hold them in place. At the melting point, the ions can move freely, and the substance becomes a liquid. Thus melting points vary with lattice energies for ionic substances that have similar structures. The melting points of the sodium halides (Figure 8.3 "A Plot of Melting Point versus the Identity of the Halide for the Sodium Halides"), for example, decrease smoothly from NaF to NaI, following the same trend as seen for their lattice energies (Figure 8.2 "A Plot of Lattice Energy versus the Identity of the Halide for the Lithium, Sodium, and Potassium Halides"). Similarly, the melting point of MgO is 2825C, compared with 996C for NaF, reflecting the higher lattice energies associated with higher charges on the ions. In fact, because of its high melting point, MgO is used as an electrical insulator in heating elements for electric stoves. Figure 8.3 A Plot of Melting Point versus the Identity of the Halide for the Sodium Halides. Choices: - occurring point - boiling point - last point - melting point A:

Ans:melting point
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Ques:Q: What is the term for the steep sloped side of a sand dune? Read this paragraph and choose the correct option from the provided answers: A sand dune has a gentle slope on the side the wind blows from. The opposite side has a steep slope. This side is called the slip face. Choices: - front face - break face - slide face - slip face A:

Ans:
slip face
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