Answer:
All amino acids share a general structure composed of four groups of molecules: a central alpha-carbon with a hydrogen atom, an amine group, a carboxyl group, and a side chain.
Answer:Human population growth impacts the Earth system in a variety of ways, including: Increasing the extraction of resources from the environment. These resources include fossil fuels (oil, gas, and coal), minerals, trees, water, and wildlife, especially in the oceans.
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Answer:
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Pathogens are microorganisms - such as bacteria and viruses - that cause disease. Bacteria release toxins and viruses damage our cells. White blood cells can ingest and destroy pathogens. They can produce antibodies to destroy pathogens, and antitoxins to neutralize toxins
Answer:
The more Homologous structures two species have, the more closely related they may be.
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