1. <span>Soil Erosion Upstream
2. </span><span>Loss of habitat
Hope this helps!</span>
When using the forced-choice procedure in measuring odor detection thresholds, the experimenter should separate trial by about 30 second Forced force method an experimental methods which help to obtain threshold.For a single interval and forced choice method there they are at least three procedure for collecting data.
Please state the options / choices so that we can answer your question. Thank you.
Asexual And Sexual is the correct answer