he most accurate and commonly used model for production of natural resources suc
ID: 1732964 • Letter: H
Question
he most accurate and commonly used model for production of natural resources such as coal, oil, and minerals is (choose one)? D Exponential O Doubling 5. T Gaussian ? Logistic 6. A "Stationary" human population using age structures is when (choose one)? The population does not change in size and birth and death rates are constant The age-specific birth rates are increasing The age-specific death rates are decreasing The age structure is a pyramid shape 7. What happens to water in lakes that effects pollutant distribution (choose one)? During summer, the upper and lower layers mix During summer, the upper and lower layers circulate independently O During the fall, the upper and lower layers separate O During the winter, the entire lake top to bottom freezes ? 8. Salts get into our water supply for all these reasons except (choose one)? Rivers passing through sedimentary rock O Heavy irrigation of crop fields ? Power plant discharges O Wastewater returns to riversExplanation / Answer
Answer 6 option a is correct. It is the definition of the Stationary pyramid.
Answer 7 option B is correct. As we know that hypolimnion is a bottom layer of colder water in the lake and it is isolated from the epilimnion by the metalimnion layer. Due to change in density of lake water at the metalimnion and so metalimnion layer acts as a physical barrier that prevents mixing of the lower and upper layers for several months during the summer.
Answer 8 basically, it is a subjective question that depends on person to person. as a theoretical point of view option C is correct. Because we are assuming waste water of power plant is well treated before discharge it into the river.
Answer 5 option c by gaussian
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