Answer:


What is carbon hydro

<h3><u>A hydrocarbon is a molecule whose structure includes only hydrogen and carbon atoms</u></h3>
Explanation:
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<em>The carbon atoms join together to form the framework of the compound, and the hydrogen atoms attach to them in many different configurations.</em></u></h3><h3><u>
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Answer:
A. Chemical modification may allow for extended drug capacities such as expanded spectrum of activity and increased stability.
Explanation:
Any modification in antibiotic structure and chemical will affects its ability in a way to increase it capability of target microbes and act efficiently. These modification can increase half life and stability of the drug.
Answer:
These are the basic steps of urine formation.
Explanation:
The first step comprises creating a filtrate in the glomerulus.
During the second stage, the filtrate flows through the tubules, and useful substances are reabsorbed.
Waste products will then be secreted by the tubules.
Whereas, the final stage is the conservation of water that occurs in the renal tubule.
There are four major stages in the formation of urine.