Answer the following question given this paragraph: Watching movies, eating hot popcorn, and many other activities depend on electrical energy. Most electrical energy comes from the burning of fossil fuels, which contain stored chemical energy. When fossil fuels are burned, the chemical energy changes to thermal energy and the thermal energy is then used to generate electrical energy. These are all examples of energy conversion. Energy conversion is the process in which one kind of energy changes into another kind. When energy changes in this way, the energy isn't used up or lost. The same amount of energy exists after the conversion as before. Energy conversion obeys the law of conservation of energy, which states that energy cannot be created or destroyed. Q: When fossil fuel is burned the chemical energy is converted into what? Choices: - kinetic energy - atmospheric energy - natural energy - thermal energy A:
thermal energy
Answer the following question given this paragraph: Like mollusks and annelids, aquatic arthropods may have gills to exchange gases with the water (discussed below). Terrestrial arthropods, on the other hand, have special respiratory structures to exchange gases with the air. These are described in Figure below . Q: What do aquatic arthropods use to exchange gases with the water? Choices: - nostrils - pores - lungs - gills A:
gills
Q: Answer the following question given this paragraph: A newborn baby has a soft spot on the top of its head. Over the next few months, the soft spot gradually hardens. What explains this?. Q: A newborn baby has a soft spot on the top of its head. over the next few months, the soft spot gradually does what? Choices: - weakens - grows - shrinks - hardens A:
A: hardens
Question: Answer the following question given this paragraph: Assume that some members of a species become geographically separated from the rest of the species. If they remain separated long enough, they may evolve genetic differences. If the differences prevent them from interbreeding with members of the original species, they have evolved into a new species. Speciation that occurs in this way is called allopatric speciation . An example is described in the Figure below . Q: A new species is said to have evolved if separated members of a species evolve genetic differences that prevent what from occurring with the original members?? Choices: - extinction - evolution - re-population - interbreeding A:
Answer: interbreeding
*Question*
Answer the following question given this paragraph: Acids change the color of certain acid-base indicators. Two common indicators are litmus and phenolphthalein. Blue litmus turns red in the presence of an acid, while phenolphthalein turns colorless. Q: What causes blue litmus to turn red? Choices: - oxygen - base - carbon - acid A:
**Answer**
acid
(Question)
Answer the following question given this paragraph: Q: Untreated botulism is typically fatal because muscles required for breathing fail to contract when the release of what chemical is blocked? Choices: - carbon dioxide - monoxide - hydrogen - acetylcholine A:
(Answer)
acetylcholine