Antibiotics are, initially, molecules naturally synthesized by microorganisms to fight against bacteria competing with their environment. This created a pressure of selection on the bacterial populations, leading to the appearance of resistant strains. In fact, when an antibiotic is used, only bacteria with defense systems against this molecule survive (and reproduce).
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Answer:
Land is an essential natural resource, both for the survival and prosperity of humanity, and for the maintenance of all terrestrial ecosystems. ... Increased demand, or pressure on land resources, shows up as declining crop production, degradation of land quality and quantity, and competition for land.
Sunlight water and carbon dioxide, it’s simply photosynthesis.
A <u>pathogen</u> is made up of nonliving pieces of DNA or RNA wrapped in a protein shell.
Answer:
Option B
Explanation:
Photosnythesis in plants involve the utilization of carbon dioxide coupled with water in the presence of sunlight to yield sugars and oxygen, so in this case, oxygen is released into the atmosphere while carbon dioxide is used up.