<span>A method of processing coal to remove contaminants by mixing coal in a solution of potassium permanganate in a selected concentration range, rinsing the coal, mixing the coal in a solution of ammonia hydroxide in a selected concentration range to cause the solution to be brought into contact with the surfaces and pores of the coal, discharging the processed coal from the second reaction vessel, monitoring the process to detect when the concentration of aqueous ammonia in the second reaction vessel has fallen below the selected range, and feeding aqueous ammonia solution with an ammonia concentration in or above the selected range to the second reaction vessel to return the solution to within the selected range.</span>
Answer:
A breakdown in trading alliances change or loss of local culture a decrease in avilable jobs
The answers are:
a. physical geography
b. human geography
Geography is divided into two main branches, physical geography, and human geography, and after that, they branch out much more and include the other geographical disciplines in them.
Physical geography is mainly concerned with the study of the natural characteristics of the Earth, both the ones on the surface and the once close to the surface.
Human geography is mainly focused on the study of the human race, the background, perceptions, interactions, organizing, human groups, effects on and from the environment etc.
The correct answer is; D. social science
Social science is NOT a branch of natural science.
Social science is the study of society, the relationship among people in a society and how the behavior of people influences the society. Social science is not a branch of natural science. Social science covers a wide range of disciplines such as economics, psychology, management and business studies, sociology, political science, communication studies and linguistics.
Oceangraphy..... hydrosohere
Please vote my answer brainliest. thanks!
