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Yesterday
During most modern agricultural practices, which of the following effects is agriculture least likely to have on soil resources? (pick one)?
maintaining the nutrient cycles
sheet erosion of topsoil
salinization of topsoil
waterlogging of topsoil
desertification of marginal lands like the savannah and chaparral
1 AnswerAgriculture1 week agoFind the area inside r=1+sin(theta) and outside r=1?
1 AnswerMathematics3 weeks agoFind the tangent line to the parametric curve at t = -pi/4?
x = sec^2(t)-1
y = tan(t)
2 AnswersMathematics3 weeks agoFind the tangent line to the parametric curve at t = -pi/4?
x = sec^2(t)-1
y = tan(t)
Mathematics3 weeks agoFind the equation of the tangent line to the parametric curve at t=2?
x = 1/(t+1)
y = t/(t-1)
2 AnswersMathematics3 weeks ago
Let R be the region bounded by the graphs of y=sin(x) and y=1/2 as shown in the figure above.?
a. Find the area of R.
b. Write, but do not evaluate, an integral expression that gives the volume of the solid generated when R is revolved around the x-axis.
c. The region R is the base of a solid. For each x in region R, the cross sections of this solid, perpendicular to the x-axis, are semi-circles. Write, but do not evaluate, an integral expression that gives the volume of the solid.
1 AnswerMathematics4 weeks ago
A squirrel starts at building A at time t=0 and travels along a straight, horizontal wire connected to building B. ?
For t between 0 and 18, the squirrel's velocity is modeled by the piecewise-linear function defined by the graph above.
Physics4 weeks agoPlease arrange the following events in the formation of an aquatic dead zone from first to occur (1) to last to occur (8)?
Oxygen demand is greater than the lake can support
Excessive nutrients enter a body of water
After nutrients are consumed, algae begins to die
Fish and other aerobic organisms die
Detritus settles to the benthic zone
Aerobic bacteria work to decompose the detritus
The lake becomes anoxic
Large quantities of algae grow
Biology2 months agoOxygen in the water varies widely because of *?
a. number of producers.
b. number of decomposers.
c. temperature of the water.
d. number of consumers.
e. All of these answers.
1 AnswerMathematics2 months agoIn lakes, large numbers of decomposers are found in the *?
a. limnetic zone.
b. benthic zone.
c. littoral zone.
d. profundal zone.
e. bathyal zone.
1 AnswerSingles & Dating2 months agoIn lakes, the nutrient-rich, sunlit water near the shore is part of the?
a. limnetic zone.
b. benthic zone.
c. littoral zone.
d. profundal zone.
e. abyssal zone.
1 AnswerSingles & Dating2 months agoFish adapted to cool, dark water are found in the zone of lakes called the ?
a. limnetic zone.
b. euphotic zone.
c. littoral zone.
d. profundal zone.
e. abyssal zone.
1 AnswerSingles & Dating2 months agoWhat's another way to calculate marginal cost of each unit other than looking at the total cost column? Why does this method work?
How do you calculate marginal cost without knowing total cost?
1 AnswerOther - Business & Finance4 months ago
