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Aleksandr [31]
3 years ago
10

What are the advantages and disadvantages of clear-cutting versus selective cutting?

Geography
2 answers:
pogonyaev3 years ago
8 0
Advantage of clear cutting:

It’s good for regeneration of shade intolerant species. Its economical way to regenerate needing fire as part of its management like in opening cones and controlling diseases.

Disadvantages of clear cutting:

Clear -cutting may create short term erosion problems especially in fine textured soils such as clays which may result to landslides and snow slides which would be a risk.


Advantages in selective cutting/logging:


Allows ecosystem to support more wildlife. It always forest to retain some of their resistance to disease and pests.

Disadvantages in selective cutting/logging:

In selective cutting the loggers must move the heavy equipment and logs around the remaining trees in the forest. Making it more dangerous work. It is also more expensive and a slower process.
There are some species of tree, like pines, firs and red woods that do not regenerate well after selective logging. This means that the composition of a forest overall may change after selective logging. Wind and ice storms can damage the open areas left by selective logging. Fire is also a risk after selective logging because the soil dries out and fires are more likely to occur.
Diano4ka-milaya [45]3 years ago
5 0

Answer:

Clear Cutting

Pro: Financial Reasons. Clearcutting advocates argue that the method is the most efficient for both harvesting and replanting trees.

Pro: Increased Water Flow.

Con: Effects on Plant and Wildlife.

Con: Loss of Recreation Land.

Pro: Increased Farmland.

Selective Cutting

Pro: Supports more wildlife by keeping their ecosystems intact

Pro: They build up tolerance and resistance to disease and pests

Pro: Carbon dioxide that is stored by the trees will regenerate (regrow)

faster

Pro: Helps the forest grow back faster

Con: Expensive and time-consuming

Con: Some species will not regenerate (regrow) as fast

Con: More exposure to weather damage such as ice, storms, and fires

Con: Lots of stumps and other tree debris left behind

These are some things I could come up with while learning some info about this.

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elephant

The largest land mammal extant today is the African bush elephant. The largest extinct land mammal known was long considered to be Paraceratherium orgosensis, a rhinoceros relative thought to have stood up to 4.8 m (15.7 ft) tall, measured over 7.4 m (24.3 ft) long and may have weighed about 17 tonnes.

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Find the area of a triangle whose base is 2√3 in. and height is 3√3 in. Type a numerical answer in the space provided. Can you s
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Answer: 9 (in square units)


WORKINGS

Base of Triangle, b = 2√3

Height of Triangle, h = 3√3

Formula for Area of Triangle, A = (b * h)/2


Area of the Triangle = (2√3 * 3√3)/2

= (2 * √3 * 3 * √3)/2


Collect like terms in the bracket

= (2 * 3 * √3 * √3)/2

= [(2 * 3) * (√3 * √3)]/2

= (6 * 3)/2

= 18/2

= 9 (In square units)
3 0
3 years ago
Which government is formed around religious laws and leaders
KATRIN_1 [288]
Theocracy. Theocracy, government by divine guidance or by officials who are regarded as divinely guided. In many theocracies, government leaders are members of the clergy, and the state's legal system is based on religious law.
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4 years ago
Find an equation for the perpendicular bisector of the line segment whose endpoints
zzz [600]

Answer:

y= -7/2x-26/2 or y= -7/2x-13

Explanation:

To solve this question you need all of these formulas:

gradient: \frac{y2-y1}{x2-x1} , Point-Slope y-y1=m(x-x1) ,

perpendicular m (m1)x(m2)=-1 , Midpoint (\frac{x1+x2}{2},\frac{y1+y2}{2} )

and equation of a line y=mx+c

where m stands for gradient

First things first.

To start you have to know the data of the line that includes the two endpoints, so you calculate its gradient (m) of this line with the gradient fromula: m=\frac{-4-(-8)}{5-(-9)} , which equals 4/14 or 2/7

(It can also be called rise/run) (Remember the rule of signs where - and - equal +)

with that information you can proceed with the point-slope or point-gradient formula, so you plug the values: y-(-8) = 2/7 (x-(-9)), which results in y+8=2/7(x+9) and then y+8=2/7x+18/7.

To finish the equation you move eight to the other side. To simplify things you can change it into a fraction as I did, and remember to change signs.

y=2/7x+18/7 -8 -> y=2/7x+18/7-56/7 . This gives us the number of y=2/7x-38/7, which is the equation of the first line.

Now to know the gradient of the second line you apply the formula of perpendicular bisector where m1 x m2 = -1. We know m1 (gradient of the first line) is 2/7, so m2 = \frac{-1}{2/7} = -7/2. m2 is therefore -7/2

Now you have to know the midpoint between the two endpoints, which will act as the start point of the perpendicular bisector

M (midpoint) = (\frac{-9+5}{2} ,\frac{8+(-4)}{2} ), which give us the coordinates of (-2, -6)

(remember, x coordinate is always first)

with this point we can apply again the point-slope formula to know the equation of the line:

y-(-6)=-7/2(x-(-2)) -> y+6=-7/2(x+2) -> y+6=-7/2x - 14/2

Move the 6 to isolate the y

y=-7/2x -14/2 - 12/2

which equals y= -7/2x -26/2

You can check the results in this page: GraphPlotter

https://www.transum.org/Maths/Activity/Graph/Desmos.asp

To make sure the answer is correct.

Hope it helps :)

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A twister is that what u asking

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