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
Answer the following question given this paragraph: Fossil fuelsincluding oil, natural gas, and coalprovide most of the energy used in the world today. Burning fossil fuels produces air pollution as well as carbon dioxide that causes global climate change. Q: Burning fossil fuels produces air pollution and what? Choices: - oxygen - liquid dioxide - acid rain - carbon dioxide A:
carbon dioxide
Q: Answer the following question given this paragraph: Centripetal Force is an umbrella term that refers to any force that makes something move in a circle. Examples of forces that can be centripetal forces are as follows: Gravity (the gravity between the Earth and Sun causes the Earth to go in a circle), Friction (the friction force between a car's tires and the road causes the car to turn), Tension (when swinging a bucket around in a circle by holding onto the string, the tension of the string is the centripetal force). Q: What do you call any force that makes something move in a circle? Choices: - cyclical - tangential force - momentum - centripetal force A:
A: centripetal force
Question: Answer the following question given this paragraph: At the end of meiosis, haploid cells are produced. These cells need to further develop into mature gametes capable of fertilization, a process called gametogenesis ( Figure below ). Animals produce gametes directly through meiosis in organs called gonads. Gametogenesis differs between the sexes. In the male, the production of mature sperm cells, or spermatogenesis , results in four haploid gametes, whereas, in the female, the production of a mature egg cell, oogenesis , results in just one mature gamete. Q: Gametes are products through meiosis in which organs? Choices: - hormones - cones - kidneys - gonads A:
Answer: gonads
*Question*
Answer the following question given this paragraph: The male gametophyte produces flagellated sperm that must swim to the egg formed by the female gametophyte. For this reason, sexual reproduction must happen in the presence of water. Therefore, nonvascular plants tend to live in moist environments. Though the life of a nonvascular seedless plant is a cycle, this can be considered the initial step in the life cycle. Q: When flagellated sperm must swim to the egg, sexual reproduction requires the presence of what substance? Choices: - air - nitrogen - sunshine - water A:
**Answer**
water
*Question*
Answer the following question given this paragraph: 24.7 Nutrition and Diet Nutrition and diet affect your metabolism. More energy is required to break down fats and proteins than carbohydrates; however, all excess calories that are ingested will be stored as fat in the body. On average, a person requires 1500 to 2000 calories for normal daily activity, although routine exercise will increase that amount. If you ingest more than that, the remainder is stored for later use. Conversely, if you ingest less than that, the energy stores in your body will be depleted. Both the quantity and quality of the food you eat affect your metabolism and can affect your overall health. Eating too much or too little can result in serious medical conditions, including cardiovascular disease, cancer, and diabetes. Vitamins and minerals are essential parts of the diet. They are needed for the proper function of metabolic pathways in the body. Vitamins are not stored in the body, so they must be obtained from the diet or synthesized from precursors available in the diet. Minerals are also obtained from the diet, but they are also stored, primarily in skeletal tissues. Q: Nutrition and diet affect your metabolism. more energy is required to break down fats and proteins than this? Choices: - vitamins - electrolytes - minerals - carbohydrates A:
**Answer**
carbohydrates