Identify the anthropogenic sources of phosphorus, and explain why they are a problem.
In: Other
Outline the difference between the rocky planets and the gaseous planets.
In: Other
You notice that your neighbor never adds any organic matter to their yard, but always seems to fertilize and water every time the plants turn yellow. a. Is this a good practice? Explain (What are the implications?) b. What practice(s) would you recommend
In: Other
Briefly explain the difference between electron beam and laser diffraction.
In: Other
Design a meaningful study in a well-equipped lab that will determine the impact of pH change on your favourite food in the year 2049.
In: Other
Name at least three Native Indian stereotypes and discuss how European Americans use (d) these popular views. This is a course on the North American Indian (anthropology)
In: Other
3. (a) Determine the diffusion coefficient of O2 (σ = 0.40 nm2 ) at 1 bar and 25 o C?
(b) The diffusion coefficient of C2H6 at 298 K and 1.00 atm is 1.307×10-5 m2 s-1 . What is the collision diameter of C2H6 based on its diffusion coefficient?
(c) Calculate the rate of diffusion, Jz of a gas at 300 K with λ = 1.00 × 10-5 cm, d = 3.16 × 10-8 cm, and M = 30.0 g mol-1 , if a concentration gradient is 1.00 × 10-7 mol cm4 ?
(d) The sheets of copper area of 1.50 m2 are separated in air by 10.0 cm. What is the rate of heat transfer from the warm sheet, 50°C to the cold sheet, - 10°C?
Given : κ (air) = 0.1241 J K-1 m-1 s-1
In: Other
In: Other
How and why was the distinction between soldier and civilian increasingly blurred, and in some cases obliterated, during the First World War?
In: Other
*Weathering, Soil and Mass Wasting*
FILL THE BLANKS
10. The downward movement of material along a curved surface of rupture, which is characterized by the backward rotation of the displaced block, is called a(n) _____.
9. The material accumulated at the base of cliffs where rocks fall is known as _____.
8. Additional weight added to a hillside, which is always the result of human activities, is called _____ .
7. Soils that are a result of intense weathering and are typically found in the tropics are _______.
6. A rapid downslope mass movement of snow and ice is called a(n) ____.
5. _____ is an essential component of soil as it provides nutrients to plants and increases the ability of the soil to retain _____.
4. A(n) ____ soil forms where the parent material has weathered, whereas ____ soil develops from eroded material that was weathered at another location.
3. Geologists call the downslope movement of material under the direct influence of gravity _____ .
2. All slopes are constantly adjusting to new conditions, which means they are in a state of _____.
1. A general term for mass movements of earth is ______.
In: Other
Please Use your keyboard (Don't use handwriting) Thank you..
Courses Name: Environmental Health
need new and unique answers, please. (Use your own words, don't copy and paste)
Please i need more than 500 words
Q. 1. Explain the environmental pollution (air, water, soil and food) health issues in KSA.
Q. 2. Describe the sources and pathways of exposure groups.
Q. 3. Enumerate methods to control and prevent pollution.
Q. 4. How public health policy and environmental law supporting to promote public health?
Please i need more than 500 words
In: Other
Question 1)
About 90% of the gold ever mined throughout human history is still
in circulation; however, only about 55% of all the silver ever
mined is still in circulation. Why do you think there is such
a difference? Explain.
Question 2)
Categorize each of the following words or phrases as being
associated with either open-pit mining (O) or underground mining
methods (U)
dust and sedimentation problems
["U", "O"]
use drifts and stopes
["U", "O"]
more dangerous
["O", "U"]
best for disseminated ores
["O", "U"]
more waste
["U", "O"]
use benches
["O", "U"]
best for vein ores
["O", "U"]
far cheaper
["O", "U"]
requires high grades
["O", "U"]
In: Other
one mole of a liquid solution containing 60.0 mole% benzene and the remainder toluene enters a flash column.The liquid product stream contains 47.0 mole% benzene and the vapor product stream contains 69.0 mole % benzene.The temperature of both output stream is at 93oC.If the operation is adiabatic,what is the temperature of the input stream that enters the flash column?
In: Other
Should Pluto be classified as a planet or not? If so, why, and would this open the classification of many objects in our solar system? If Pluto is not a planet, why not? explain briefly.
In: Other