The answer is : Tectonic plates
Answer:
1. Most common causes---- Mercury, nitrogen and phosphorus, pesticides, dissolved metals (excluding mercury) and PCBs (industrial pollutant)
2. Least common causes---- pH changes
, sedimentation and hypoxia.
Explanation:
The most common heavy metals that causes pollution are chromium (Cr), cadmium (Cd), lead (Pb), nickel (Ni), arsenic (As), mercury (Hg), zinc (Zn) and copper (Cu). Nitrogen and phosphorus application pollutes the water due to its leaching nature. The use of pesticides is very common in agriculture that cause more pollution. Pollutant comes from the industries cause water pollution and is responsible for a number of diseases.
The rhetorical strategy is Kennedy most clearly using in the excerpt is Logos.
In order to persuade their listeners, speakers often utilize a communication technique called logos, which is Greek for "an appeal to reasoning." This method of persuasion involves the speaker making an argument supported by logic, data, and facts.
Keeping data in front of his audience, John F. Kennedy says in his speech, "We Choose to Go to the Moon." His speech was intended to urge his listeners to support the concept of satellite launch and lunar landing. By displaying the numbers, he is demonstrating how the United States is improving.
Thus, Logos is the rhetorical device employed.
For more info about 'John F. Kennedy' follow on bellow link - brainly.com/question/21223104
#SPJ4
Complete Question is -
Within these last 19 months at least 45 satellites have circled the earth. Some 40 of them were "made in the United States of America" and they were far more sophisticated and supplied far more knowledge to the people of the world than those of the Soviet Union. What rhetorical strategy is Kennedy most clearly using in the excerpt?
Answer:
Agricultural information and industrual revolution U
Explanation:
They used the soil by it to farm because it was rich, and the water to travel and trade.