Answer the following question given this paragraph: ♦️ Glasses are mixtures of oxides, the main component of which is silica (SiO2). Silica is called the glass former, while additives are referred to as glass modifiers. The crystalline lattice of the glass former breaks down during heating, producing the random atomic arrangements typical of a liquid. Adding a modifier and cooling the melt rapidly produces a glass. How does the three-dimensional structure of the glass differ from that of the crystalline glass former? Would you expect the melting point of a glass to be higher or lower than that of pure SiO2? Lead glass, a particular favorite of the Romans, was formed by adding lead oxide as the modifier. Q: Glasses are mixtures of oxides, the main component of which is silica (sio2). silica is called the glass former, while additives are referred to as this? Choices: - natural modifiers - addition modifiers - glass actors - glass modifiers A:
glass modifiers
(Question)
Answer the following question given this paragraph: Meiosis is a type of cell division that halves the number of chromosomes. Q: Which type of cell division halves the number of chromosomes? Choices: - fragmentation - budding - mitosis - meiosis A:
(Answer)
meiosis
Ques: Answer the following question given this paragraph: Neurons are the structural and functional units of the nervous system. They consist of a cell body, dendrites, and axon. Q: What unit of the nervous system consists of a cell body, dendrites, and axon? Choices: - Transmitter - mitochondria - ganglion - neuron A:
Ans: neuron
(Q).
Answer the following question given this paragraph: The cell is the smallest unit of structure and function of all living organisms. But this smallest of units still performs some very complex processes. In fact, for some organisms, just one cell must do everything necessary for life. Q: What is the smallest unit of structure and function of all living organisms? Choices: - atom - particle - proton - cell A:
(A).
cell
Ques:Answer the following question given this paragraph: Q: The older parts of what structures anchor the plant and transport water and solutes between the soil and shoots? Choices: - cells - bark - leaves - roots A:

Ans:roots
Answer the following question given this paragraph: The story is quite different for gases. Gases take the shape of their container, and they are relatively easy to compress. There are fewer gas particles per unit volume than for the same substance in the liquid or solid form. In fact, the liquid form of a given material is generally several hundred times more dense than the gas form at normal pressures. Despite the large amounts of empty space, a sample of a gas contains many particles moving around, colliding and imparting force on their surroundings. For example, in a one mole sample of gas at 0C and 1 atm of pressure, each cubic centimeter contains roughly 2.7 10 19 molecules. Each molecule participates in several billion collisions every second, moving only about 10-100 nanometers between collisions. Additionally, these gas particles move at very high speeds. For example, at 25C, the average speed of hydrogen molecules in a sample of hydrogen gas is 1960 m/s. Q: What take the shape of their container, and are relatively easy to compress? Choices: - molecules - semi-fluids - fluids - gases A:
gases