Answer the following question given this paragraph: Soil erosion is a natural occurrence. However, human activities have greatly accelerated soil erosion. In some locations, soil may now be eroding about 10 times faster than its natural rate. Since Europeans settled in the United States, approximately one-third of the topsoil has eroded away. Q: Since europeans settled in the united states, about what percentage of topsoil has eroded away? Choices: - 42 percent - 10 percent - 25 percent - 33 percent A:
33 percent
Answer the following question given this paragraph: Oceanographers use bathymetric maps to show the features of the bottom of a body of water. Q: What kind of map can show the features of the bottom of a body of water? Choices: - topographic - basic - country - bathymetric A:
bathymetric
Q: Answer the following question given this paragraph: Duplications (or amplifications ) lead to multiple copies of a chromosomal region, increasing the number of the genes located within that region. Some genes may be duplicated in their entirety. Q: What leads to multiple copies of a chromosomal region? Choices: - minimilizations - gene modification - subtractions - duplications (or amplifications ) A:
A: duplications (or amplifications )
Question: Answer the following question given this paragraph: The other ammonium ions are changed into nitrogen gas by denitrifying bacteria. Q: The other ammonium ions are changed into nitrogen gas by what? Choices: - fluctuations bacteria - fungi - accompanying bacteria - denitrifying bacteria A:
Answer: denitrifying bacteria
*Question*
Answer the following question given this paragraph: Jason Hollinger. In hornworts, the horns are the sporophytes that rise up from the leaflike gametophyte . CC BY 2.0. Q: In hornworts, the horns are the sporophytes that rise up from what? Choices: - the roots - the polyol gametophyte - the breaza gametophyte - the leaflike gametophyte A:
**Answer**
the leaflike gametophyte
(Question)
Answer the following question given this paragraph: Biochemical compounds make up the cells and tissues of living things. They are also involved in all life processes. Given their diversity of functions, it's not surprising that there are millions of different biochemical compounds. Even so, all biochemical compounds can be grouped into just four main classes: carbohydrates, proteins, lipids, and nucleic acids. The classes are summarized in Table below . Q: What type of compounds make up the cells and tissues of living things? Choices: - hormonal - microbial - proximal - biochemical A:
(Answer)
biochemical