Answer the following question given this paragraph: The duodenum is the first and shortest part of the small intestine. Most chemical digestion takes place here, and many digestive enzymes are active in the duodenum (see Table below ). Some are produced by the duodenum itself. Others are produced by the pancreas and secreted into the duodenum. Q: The duodenum is a part of which part of the gi tract? Choices: - large intense - pharynx - ulna - small intestine A:
small intestine
Answer the following question given this paragraph: Ordinary table salt is called sodium chloride. It is considered a substance because it has a uniform and definite composition. All samples of sodium chloride are chemically identical. Water is also a pure substance. Salt easily dissolves in water, but salt water cannot be classified as a substance because its composition can vary. You may dissolve a small amount of salt or a large amount into a given amount of water. A mixture is a physical blend of two or more components, each of which retains its own identity and properties in the mixture . Only the form of the salt is changed when it is dissolved into water. It retains its composition and properties. Q: Ordinary table salt is called what? Choices: - oxygen chloride - carbon chloride - ammonia chloride - sodium chloride A:
sodium chloride
Q: Answer the following question given this paragraph: Q: Biodiversity hot spots are prime candidates for protection because they are prone to what species fate? Choices: - mutation - reduction - accumulation - extinction A:
A: extinction
Question: Answer the following question given this paragraph: Biotic factors are the parts of the environment that are alive, or were alive and then died, such as plants, animals, and their remains. Biotic factors also include bacteria, fungi and protists. Q: What factors consist of parts of the environment that are or were alive, and their remains? Choices: - abiotic factors - xerophytic factors - decomposition factors - biotic factors A:
Answer: biotic factors
*Question*
Answer the following question given this paragraph: In the winter, many people find the snow and ice beautiful. They enjoy getting out to ski or ice-skate. Others don't find that time of year to be so much fun. When the snow melts, the roads get very sloppy and messy. Those people look forward to spring when all the ice and snow are gone and the weather is warmer. Q: What season causes people to look forward to spring? Choices: - autumn - fall - summer - winter A:
**Answer**
winter
Q: Answer the following question given this paragraph: Each step in the process is either a gain of oxygen or a loss of hydrogen. Each step also releases energy, which explains why the complete combustion of alkanes to carbon dioxide is an extremely exothermic reaction. Q: The complete combustion of alkanes to carbon dioxide is an extremely __________ reaction. Choices: - hydrolic - geothermal - reactive - exothermic A:
A: exothermic