Ques:Answer the following question given this paragraph: larger cities and economic growth therein leads to the construction of dams, the consequent flooding of ecosystems, and increased emissions of pollutants. Other threats to tropical forests come from poachers, who log trees for their precious wood. Ebony and Brazilian rosewood, both on the endangered list, are examples of tree species driven almost to extinction by indiscriminate logging. The number of plant species becoming extinct is increasing at an alarming rate. Because ecosystems are in a delicate balance, and seed plants maintain close symbiotic relationships with animalswhether predators or pollinatorsthe disappearance of a single plant can lead to the extinction of connected animal species. A real and pressing issue is that many plant species have not yet been catalogued, and so their place in the ecosystem is unknown. These unknown species are threatened by logging, habitat destruction, and loss of pollinators. They may become extinct before we have the chance to begin to understand the possible impacts from their disappearance. Efforts to preserve biodiversity take several lines of action, from preserving heirloom seeds to barcoding species. Heirloom seeds come from plants that were traditionally grown in human populations, as opposed to the seeds used for large-scale agricultural production. Barcoding is a technique in which one or more short gene sequences, taken from a well-characterized portion of the genome, are used to identify a species through DNA analysis. Q: What type of seeds come from plants that were traditionally grown in human populations, as opposed to the seeds used for large-scale agricultural production? Choices: - old-fashioned seeds - modified seeds - original seeds - heirloom seeds A:

Ans:heirloom seeds
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Ques:Answer the following question given this paragraph: Genetics is the study of inheritance. The field of genetics seeks to explain how traits are passed on from one generation to the next. Q: What field of science seeks to explain how traits are passed on from one generation to the next? Choices: - zoology - biochemistry - quantum physics - genetics A:

Ans:genetics
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Ques:Answer the following question given this paragraph: Mechanical energy is the energy of an object that is moving or has the potential to move. It is the sum of an object's kinetic and potential energy. In Figure below , the basketball has mechanical energy because it is moving. The arrow in the same figure has mechanical energy because it has the potential to move due to the elasticity of the bow. What are some other examples of mechanical energy?. Q: What term describes the energy of an object that is moving or has the potential to move? Choices: - stationary energy - molecular energy - thermal energy - mechanical energy A:

Ans:mechanical energy
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Ques:Answer the following question given this paragraph: Q: Large increases in the diversity of life have resulted from adaptive radiations that followed what? Choices: - mass mutations - mass migrations - glaciers - mass extinctions A:

Ans:
mass extinctions
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