Answer:
Pick Hydrogen, but read below.
Explanation:
The blacks are Carbon. They have 4 connections. The left Carbon has 3 whites connected to it. It is not totally an exclusive answer, but the whites could be anything in Column 17 (F, Cl, Br, I) or Hydrogen. Likely it is hydrogen.
The pollutants from humans placed on the surface of the earth impact groundwater, They can percolate vertically downward through soil, eventually reaching groundwater.
<h3>How does groundwater pollution happen? </h3>
Groundwater located near irregular landfills can be contaminated with fluids. When infiltrating the soil, these fluids reach the groundwater, contaminating them with bacteria.
in this case, is possible to say that They can percolate vertically downward through soil, eventually reaching groundwater.
See more about groundwater at brainly.com/question/10005777
#SPJ1
Answer: The information suggests that C. difficile is the leading cause of hospital-acquired infections usually as a result of antibiotics use.
Explanation: Antibiotics are employed to inhibit or kill bacteria. When used properly, they target aggressive bacteria that are causing infections. But sometimes healthy gut bacteria are killed in the process (normal healthy gut bacteria helps keep C. difficile in check) creating a vacuum which with increasing frequency, C. difficile seizes, and proliferates — especially in hospitalized patients, many of whom are not so strong to withstand the stress of diarrhea and fever.
Some of these antibiotics that most often lead to C. difficile infections include the quinolones, cephalosporines etc. including some proton-pump medications.
