Ques:Answer the following question given this paragraph: Q: Portal veins carry blood between what? Choices: - chambers of the heart - digestive organs - arteries - pairs of capillary beds A:

Ans:pairs of capillary beds
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Ques:Answer the following question given this paragraph: The branch of biology that studies animal behavior is called ethology. Ethologists usually study how animals behave in their natural environment. They try to determine the cause of behaviors, how behaviors develop, and how and why behaviors evolve. Q: Which branch of biology studies animal behavior? Choices: - microbiology - anthropology - embryology - ethology A:

Ans:ethology
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Ques: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:

Ans:lose electrons
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Ques:Answer the following question given this paragraph: The density of matter can be calculated by dividing its mass by its volume. Q: How can you calculate the density of matter? Choices: - by subtracting mass from volume - by multiplying its mass by its volume - by dividing its volume by its mass - by dividing its mass by its volume A:

Ans:
by dividing its mass by its volume
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