Answer:
Louis Pasteur demonstrated that cells can only arise from pre-existing cells.
Explanation:
The contributions of Louis Pasteur are one of the most remarkable in the history of humanity. Before Pasteur performed the experiments that revolutionized the cell theory, most people believed in the theory of <u>Spontaneous Generation</u>, which <u>stated living organisms could arise from non-living matter.</u>
However, in the 18th century, <u>Pasteur performed a series of experiments that disproved the theory of Spontaneous Generation</u>. By using using covered and non-covered flasks with broth, he demonstrated that cells were only able to grow in the broth if it was not properly covered, that is, if the air was exposed. This illustrated that cells couldn't arise from non-living matter but the opposite: cells can only arise from pre-existing cells. This was an extremely significant contribution to the cell theory.
ALL these microorganisms can represent common types of pathogens at the beach. In consequence, it is imperative to take precaution measures to avoid infections.
The sand at the beach may contain dog feces, which is known to transport <em>Toxocara canis</em>, a parasite roundworm able to infect humans.
Moreover, samples of beach sand may also contain different types of pathogenic bacteria (e.g., <em>Staphylococcus species, E. coli, Enterobacteriacea</em>, etc) and viruses (e.g., enteroviruses, hepatitis A, Norwalk viruses, reoviruses, rotaviruses, etc).
In consequence, it is imperative to wash hands with soap and water when touching beach sand that is suspected to be contaminated.
Finally, marine water may also be contaminated with different zoonotic protozoa such as, among others, <em>Giardia, Cryptosporidium </em>and <em>Toxoplasma. </em>
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Answer:$1276
Explanation:
annual subscription =$170
legal reference fee =$1500
chicago subscription =$54
carey has a 1-year legal reference service and used a certain amount for two different subsriptions. so, to get carey's deduction, you add the 2 subscriptions from the legal service.
that is,
$1500- $(170+54)
$1500-$224
$1,276
Pulmonary and systemic circulation.
1) true
2)true
3)true
6)producer
7)decomposer
9)bottom/lowest
10)less