Answer the following question given this paragraph: The color of soil indicates its fertility. Black or dark brown soils are rich in nitrogen and contain a high percentage of organic materials. Soils that are nitrogen poor and low in organic material might be gray, yellow, or red. Q: What visual property of soil indicates fertility and nitrogen content? Choices: - texture - contrast - quality - color A:
color
(Question)
Answer the following question given this paragraph: In harmonic motion there is always a restorative force , which acts in the opposite direction of the velocity. The restorative force changes during oscillation and depends on the position of the object. In a pendulum it is the component of gravity along the path of motion. The force on the oscillating object is directly opposite that of the direction of velocity. Q: A solute generally has what effect on the boiling point of a solvent? Choices: - randomizes - lowers - none - raises A:
(Answer)
raises
Ques: Answer the following question given this paragraph: 23.4 Natural selection is the only mechanism that consistently causes adaptive evolution. Q: What is the only mechanism that consistently causes adaptive evolution? Choices: - genetic drift - neutral selection - artificial selection - natural selection A:
Ans: natural selection
(Q).
Answer the following question given this paragraph: Q: What are the long, thin protein extensions in most prokaryotic cells called? Choices: - analyte - cingulum - neutrons - flagellum A:
(A).
flagellum
Ques:Answer the following question given this paragraph: Humans have caused many extinctions by introducing species to new places. For example, many of New Zealand's birds have adapted to nesting on the ground. This was possible because there were no land mammals in New Zealand. Then Europeans arrived and brought cats, foxes, and other predators with them. Several of New Zealand's ground nesting birds, such as this flightless kiwi, are now extinct or threatened because of these predators. Q: What can ultimately result when species are introduced to a new place and prey on other species? Choices: - depletion - over population - elimination - extinction A:

Ans:extinction
Question: Answer the following question given this paragraph: Communication is any way that animals share information. For animals that live in social groups, communication is essential. Animals may use a range of senses for communicating. The most important way that humans communicate is with language. Q: Communication is any way that animals share what? Choices: - water - genes - food - information A:
Answer:
information