Answer:
The effective ingredient was likely quinine from the cinchona tree.
Explanation:
Quinine is obtained from the bark of the cinchona tree and it is used in the treatment of malaria. Malaria is transmitted to humans by several species of mosquitoes. In South America, Malaria is mostly transmitted in rain forest areas in northern countries. Therefore, in the situation we are studying here, the member who became ill might have been infected. The quinine present in the cinchona bark made him feel better.
<span>A recent study has shown that children who are conceived in the winter months up until March in the US are 10% more likely to develop autism than those conceived in other months. The reason might be that there is a greater occurrence of infectious diseases in the winter months which may expose the mother to pathogens.</span>
I believe the answer is d :) the law stopped immigration from the us to texas so that answer makes sense
<u>Answer</u>:
Since the mid 1970s, the United States had a significant trade deficit.
<u>Explanation</u>:
The U.S had undergone a trade deficit since the 1970s. This has been contributed to the fact that they have been importing way more supplies and goods than the other countries were buying from the Americans. These imports have affected the native industries. Also, the demand for American products went down drastically and thus contributing to the deficit.
While Europe and Great Britain undertook industrialization in the 18th century, Americans started it in the 19th century-this delay resulted in the US depending upon imported goods and also in US struggling to meet Europe's levels of export.
Answer:
B. They break down rotting materials and return nutrients to the soil.
