Well there is Google for a reason. "Definition of nucleic acid". "What is nucleic acid". I'll give you the definition though. A complex organic substance present in living cells, especially DNA or RNA. The molecules consist of many <span>nucleotides linked in a long chain.</span>
Answer:
Autotrophs make their own food through the process of photosynthesis. They use sunlight, water and carbon dioxide to produce glucose and oxygen.
Plants are the most common autotrophs, but algae and cyanobacteria are also autotrophs.
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A lake is an example of a littoral zone and a spring is an example of a discharge zone. The littoral zone is a part of the sea or lake that is close to the shore. It extends on high water mark to shoreline that has been submerged. It allows as well aquatic plants to grow. Groundwater flows until it reaches the discharge zone in which the water is above the surface of the land.
Antimicrobial agents active <span>against mycobacteria have to be administered for months or years rather than the typical 10-30 days prescribed to treat other infections because mycobacteria reproduce very slowly.
So, over the period of time that mycobacteria reproduce, antimicrobial agents have to be taken so as to prevent these mycrobacteria from invading the body completely. Once their reproduction is completely prevented, antimicrobial agents don't have to be administered anymore.
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The answer is A. less competition for resources
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