I think the answer is taproot
Answer:
A. A claim new islands in the pacific
Explanation:
The Act was enacted in August 18, 1856. At that time, many of the islands in Caribbean/pacific territories were not affiliated with any government.
The act allowed citizens of United States to claim any lands within these regions that contain Guano deposits.
This made a lot of weapon and agricultural producers claimed new islands in the pacific since Guana can be used as a material for gun powders and soil fertilizer.
Answer: This is a "CONTROLLED PLACEBO EXPERIMENT".
Explanation: A controlled placebo experiment is a type of research method that is used to check the effectiveness of a drug in a patient. This is done by selecting a sample group, then randomly divide the two group into a placebo group ( this are the group that will receive the drug treatment ) and the controlled group( these are the group that will receive a coloured mixture that looks like the drug, but does not have any effect). Without the groups knowledge about the real drugs and the coloured mixture, but are followed up and tested.
This is a controlled placebo experiment, because 400 student has been choosed as the sample, and are divided into a placebo group and a controlled group, to check the effectiveness of a drug on their memory.
The correct answer is Yellowstone - b . Yellostone National Park is placed on the borders of Wyomming, Montana and Idaho, and is home to the species above.
Two basic types of markets exist in any market economy: resource markets and product markets. The exchanges that take place in these markets benefit both the households and the firms that engage in exchanges. This lesson will introduce the circular flow of money, resources and goods and services in a market economy.
