Answer the following question given this paragraph: In many parts of the world, table salt is obtained from the evaporation of sea water. The heat for the process comes from the sun. Q: What results from the evaporation of sea water? Choices: - carbon-di-oxide - reef - oxygen - salt A:
salt
Answer the following question given this paragraph: Hemoglobin is an example of a transport protein in the blood. You can see how it works in Figure below . The heme parts of a hemoglobin molecule bind with oxygen. Each red blood cell has hundreds of hemoglobin molecules. This is how oxygen is carried in the blood to cells throughout the body. Q: The heme parts of a hemoglobin molecule bind with what element? Choices: - hydrogen - carbon - nitrogen - oxygen A:
oxygen
Q: Answer the following question given this paragraph: Clearing land for agriculture and development is a major cause of habitat destruction. Within the past 100 years, the amount of total land used for agriculture has almost doubled. Land used for grazing cattle has more than doubled. Agriculture alone has cost the United States half of its wetlands ( Figure below ) and almost all of its tallgrass prairies. Native prairie ecosystems, with their thick fertile soils, deep-rooted grasses, diversity of colorful flowers, burrowing prairie dogs, and herds of bison and other animals, have virtually disappeared ( Figure below ). Q: Clearing land for agriculture and development is a major cause of what negative result? Choices: - water destruction - human destruction - mineral destruction - habitat destruction A:
A: habitat destruction
Question: Answer the following question given this paragraph: Both fluorine and lithium are highly reactive elements because of their number of valence electrons. Fluorine will readily gain one electron and lithium will just as readily give up one electron to become more stable. In fact, lithium and fluorine will react together as shown in the Figure below . When the two elements react, lithium transfers its one "extra" electron to fluorine. Q: Both fluorine and lithium are highly reactive elements because of their number of what? Choices: - shell electrons - positrons - covalence electrons - valence electrons A:
Answer: valence electrons
*Question*
Answer the following question given this paragraph: When homologous chromosomes pair up during meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between non-sister chromatids of homologous chromosomes. It results in new combinations of genes on each chromosome. Q: What is the term for the exchange of genetic material between non-sister chromatids of homologous chromosomes? Choices: - inheritance - asexual reproduction - meiosis - crossing-over A:
**Answer**
crossing-over
(Q).
Answer the following question given this paragraph: Found as a pure element in nature; oxides decompose with heating. Q: What causes oxides to decompose? Choices: - humidity - acidity - precipitation - heat A:
(A).
heat