1. which of the two types of erosion occurs due to the activities of man? a. geologic erosion b. accelerated erosion 2. erosion can be caused by: ( choose three ) [ ] solar radiation [ ] water [ ] alpine/ snow avalanches [ ] glaciers [ ] wind 3. what type of best management practices would/should be used in places where ground is sloped? chose all that apply [ ] terraces [ ] crop rotation [ ] windbreaks [ ] gas waterways [ ] contour 4. the “dust bowl” event of the 1930s occurred in what region of the united states? 5. the mass soil erosion that occurred during the dust bowl event was caused by several contributing factors. choose all that influenced this strategy [ ] decades of settling and farming had left tilled soil bare to the wind [ ] severe drought was affecting the entire region [ ] wild herds or buffalo over grazed the plains [ ] native grasses had been removed for farming 6. true or false: scientists believe that over grazing and inappropriate farming economies can make the air above the ground drier and warmer— and therefore less likely to generate rain clouds, thus influencing drought in a region. a. true b. false

Where does all the water go? according to the environmental protection agency (epa), in a typical wetland environment, 39% of the water is outflow; 46% is seepage; 7% evaporates; and 8% remains as water volume in the ecosystem (reference: united states environmental protection agency case studies report 832-r-93-005). chloride compounds as residuals from residential areas are a problem for wetlands. suppose that in a particular wetland environment the following concentrations (mg/l) of chloride compounds were found: outflow, 60.4; seepage, 73.7; remaining due to evaporation, 26.4; in the water volume, 46.8. (a) compute the weighted average of chlorine compound concentration (mg/l) for this ecological system. (round your answer to one decimal place.) mg/l (b) suppose the epa has established an average chlorine compound concentration target of no more than 58 mg/l. does this wetlands system meet the target standard for chlorine compound concentration? yes. the average chlorine compound concentration (mg/l) is too high. yes. the average chlorine compound concentration (mg/l) is lower than the target. no. the average chlorine compound concentration (mg/l) is lower than the target. no. the average chlorine compound concentration (mg/l) is too high.

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?