Answer the following question given this paragraph: The fuel that burns in a combustion reaction is often a substance called a hydrocarbon. A hydrocarbon is a compound that contains only carbon (C) and hydrogen (H). Fossil fuels, such as natural gas, consist of hydrocarbons. Natural gas is a fuel that is commonly used in home furnaces and gas stoves (see Figure below ). The main component of natural gas is the hydrocarbon called methane (CH 4 ). The combustion of methane is represented by the equation:. Q: The fuel that burns in a combustion reaction in many fossil fuels such as natural gas that consists of carbon hydrogen is known as what? Choices: - helium - catalyst - fossil - hydrocarbon A:
hydrocarbon
Answer the following question given this paragraph: Characteristics of Amphibians As tetrapods, most amphibians are characterized by four well-developed limbs. Some species of salamanders and all caecilians are functionally limbless; their limbs are vestigial. An important characteristic of extant amphibians is a moist, permeable skin that is achieved via mucus glands that keep the skin moist; thus, exchange of oxygen and carbon dioxide with the environment can take place through it ( cutaneous respiration). Additional characteristics of amphibians include pedicellate teethteeth in which the root and crown are calcified, separated by a zone of noncalcified tissueand a papilla amphibiorum and papilla basilaris, structures of the inner ear that are sensitive to frequencies below and above 10,00 hertz, respectively. Amphibians also have an auricular operculum, which is an extra bone in the ear that transmits sounds to the inner ear. All extant adult amphibians are carnivorous, and some terrestrial amphibians have a sticky tongue that is used to capture prey. Q: Amphibians have permeable skin which allows for the exchange of oxygen and carbon dioxide, what is this "breathing called?" Choices: - variant respiration - benign respiration - aquatic respiration - cutaneous respiration A:
cutaneous respiration
Q: Answer the following question given this paragraph: People with osteoporosis have an increased risk of bone fractures. A bone fracture is a crack or break in bone. Even if you have healthy bones, you may fracture a bone if too much stress is placed on it. This could happen in a car crash or while playing a sport. Wearing a seatbelt when you ride in a motor vehicle and wearing safety gear when you play sports may help prevent bone fractures. Q: People with osteoporosis have an increase risk of what? Choices: - cancer - muscle loss - weight loss - bone fractures A:
A: bone fractures
Question: Answer the following question given this paragraph: Sublimation occurs when ice and snow change directly to water vapor. This also happens because of heat from the sun. Q: When does sublimation occur? Choices: - when the wind changes direction - when the snow melts the ice caps - when the ice and sand change directly into water vapors - when the ice and snow change directly into water vapors A:
Answer: when the ice and snow change directly into water vapors
*Question*
Answer the following question given this paragraph: Figure 20.13 Diabetes is a disease characterized by high concentrations of glucose in the blood. Treating diabetes involves making lifestyle changes, monitoring blood-sugar levels, and sometimes insulin injections. (credit: "Blausen Medical Communications"/Wikimedia Commons). Q: What is a disease characterized by high concentrations of glucose in the blood? Choices: - myeloma - hepatitis - leukemia - diabetes A:
**Answer**
diabetes
Answer the following question given this paragraph: 24.4 | Fungal Parasites and Pathogens By the end of this section, you will be able to: Describe fungal parasites and pathogens of plants Describe the different types of fungal infections in humans Explain why antifungal therapy is hampered by the similarity between fungal and animal cells Parasitism describes a symbiotic relationship in which one member of the association benefits at the expense of the other. Both parasites and pathogens harm the host; however, the pathogen causes a disease, whereas the parasite usually does not. Commensalism occurs when one member benefits without affecting the other. Q: What type of relationship occurs between organisms when one member benefits without affecting the other? Choices: - cooperative - bilateral - parasitic - commensalism A:
commensalism