The best and most correct answer among the choices provided by your question is the second choice or letter B.
<span>Plants lose their leaves to conserve energy is an example of how organisms are affected in a tundra biome.</span>
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'Biological diversity' means the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species and of ecosystems
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Diffusion expends no energy. Rather the different concentrations of materials in different areas are a form of potential energy, and diffusion is the dissipation of that potential energy as materials move down their concentration gradients, from high to low.
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B<span>. one organism benefits but the other is not harmed</span>
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Why are stem cell research important? Stem cells represent an exciting area in medicine because of their potential to regenerate and repair damaged tissue. Some current therapies, such as bone marrow transplantation, already make use of stem cells and their potential for regeneration of damaged tissues.
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