Answer the following question given this paragraph: Contour lines run next to each other. Each contour line is separated by a constant difference in elevation, usually noted on the map. Q: What type of lines run next to each other? Choices: - perpendicular lines - crater lines - fault lines - contour lines A:
contour lines
Answer the following question given this paragraph: The atria receive the blood, and the ventricles pump the blood out of the heart. Each of the four chambers of the heart has a specific job. Q: How many chambers are in the heart? Choices: - two - eight - five - four A:
four
Q: Answer the following question given this paragraph: Third, there are some exceptions to the previous point. A few elements, all metals, can form more than one possible charge. For example, iron atoms can form 2+ cations or 3+ cations. Cobalt is another element that can form more than one possible charged ion (2+ and 3+), while lead can form 2+ or 4+ cations. Unfortunately, there is little understanding which two charges a metal atom may take, so it is best to just memorize the possible charges a particular element can have. Note the convention for indicating an ion. The magnitude of the charge is listed as a right superscript next to the symbol of the element. If the charge is a single positive or negative one, the number 1 is not written; if the magnitude of the charge is greater than 1, then the number is written before the + or sign. An element symbol without a charge written next to it is assumed to be the uncharged atom. Naming an ion is straightforward. For a cation, simply use the name of the element and add the word ion (or if you want to be more specific, add cation) after the element's name. So Na+ is the sodium ion; Ca2+ is the calcium ion. If the element has more than one possible charge, the value Saylor URL: http://www. saylor. org/books. Q: An element symbol without a charge written next to it is assumed to be what? Choices: - dead atom - corroborate atom - surfactants atom - uncharged atom A:
A: uncharged atom
Question: Answer the following question given this paragraph: Chemical weathering is different than mechanical weathering. The minerals in the rock change their chemical makeup. They become a different type of mineral or even a different type of rock. Chemical weathering works through chemical reactions that change the rock. Q: What works through chemical reactions that change the rock? Choices: - gradual weathering - chemical breakdown - rock weathering - chemical weathering A:
Answer: chemical weathering
*Question*
Answer the following question given this paragraph: Only radioactive isotopes have half-lives. Q: The first law of thermodynamics deals with the total amount of energy in what? Choices: - organism - springs - galaxy - universe A:
**Answer**
universe
(Q).
Answer the following question given this paragraph: Nonvascular plants include the mosses, the hornworts, and the liverworts. Q: What type of plants are the mosses, the hornwarts, and the liverworts considered to be? Choices: - spirogyra - Vascular - xerophyte - nonvascular A:
(A).
nonvascular