Answer:
Miasma theory was replaced because John Snow collected data that showed that germs cause disease.
Explanation:
The theory of miasma was proposed in the past when some scientists —like doctors Thomas Sydenham and Giovanni Maria Lancisi— thought that disease was the product of emanations originated by the decomposition of organic matter. This theory was based on the fact that diseases predominated in places with poor hygienic conditions.
John Snow, an english physician, was one of the main contributors to the <u>microbial theory of disease</u>. In 1854, while a cholera epidemic was occurring, he collected data and organized it statistically and then concluded that the disease was caused by germs present in drinking water. This <u>data was contrary to the miasma theory, which would eventually be displaced by the microbial theory of the disease</u>.
They carry a combination of their genetic traits.
Answer: A
Explanation: the ice age posed a new chalenge to deer mice and on the ice the preadators could spot the darker deer mice better than the light deer mice.
SOS:
The answer is <em><u>gametes!</u></em>
<em>Hope this helps!</em>
A.
The aim of a tax on a valuable resource, in this case residential water use, is to reduce wasteful practices. In this case the county is considering a special tax when residential water use is ABOVE a certain amount. This is an effective mechanism to reduce wastage by causing high users to incur more cost. Everyone will still pay for their water consumption in the normal way (typically by a $/unit cost), however the tax will take effect when the residential water consumption reaches a certain point. This penalises high users of water by forcing them to pay more for a valuable resource. Note that essential services like energy and water are often subsidised in society. This means that we do not pay the true cost associated with the use of the resource. Setting a tax that applies to those that consume over a certain threshold helps to reduce wastage of an undervalued essential resource such as water or energy.
