Answer the following question given this paragraph: Mariana Ruiz Villarreal (LadyofHats) for CK-12 Foundation. The nitrogen cycle tracks the flow of nitrogen through an ecosystem . CC BY-NC 3.0. Q: Which cycle tracks the flow of nitrogen through an ecosystem? Choices: - nitrogen reaction - water cycle - life cycle - nitrogen cycle A:
nitrogen cycle
Answer the following question given this paragraph: Q: Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in what? Choices: - precipitation - oxygen - air pressure - temperature A:
temperature
Q: Answer the following question given this paragraph: Metallic character refers to the level of reactivity of a metal. Metals tend to lose electrons in chemical reactions, as indicated by their low ionization energies. Within a compound, metal atoms have relatively low attraction for electrons, as indicated by their low electronegativities. By following the trend summary in the figure below, you can see that the most reactive metals would reside in the lower left portion of the periodic table. The most reactive metal is cesium, which is not found in nature as a free element. It reacts explosively with water and will ignite spontaneously in air. Francium is below cesium in the alkali metal group, but is so rare that most of its properties have never been observed. Q: Do metals tend to gain electrons or lose electrons in chemical reactions? Choices: - develop electrons - same number of electrons - gain electrons - lose electrons A:
A: lose electrons
Question: Answer the following question given this paragraph: Transform fault earthquakes have shallow focus because the plates meet near the surface. Q: What type of earthquake has a shallow focus because the plates meet near the surface? Choices: - gas giant - divergent boundary - tectonic - transform fault A:
Answer: transform fault
*Question*
Answer the following question given this paragraph: Figure 3.11 Insects have a hard outer exoskeleton made of chitin, a type of polysaccharide. (credit: Louise Docker). Q: What is an insect's hard outer exoskeleton made out of? Choices: - lectin - casein - melanin - chitin A:
**Answer**
chitin
(Question)
Answer the following question given this paragraph: In convection, materials move depending on their heat relative to nearby materials. Q: The process in which materials move depending on their heat relative to nearby materials is known as what? Choices: - induction - radiation - ventilation - convection A:
(Answer)
convection