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Goryan [66]
3 years ago
8

A farmer who has grown corn for the past five years notices in the sixth year that his harvest is significantly smaller, despite

an increase in labor on the farm. The following year, the harvest continues its decline. Which of the following explanations most plausibly accounts for the reduction in corn yield? A. soil degradation B. desalinization C. better irrigation D. terracing Reset Next
Geography
2 answers:
ELEN [110]3 years ago
6 0
I would say A. soil degradation
seropon [69]3 years ago
3 0

Answer:

A.

Explanation:

Growing a different crop (crop rotation) will prevent the soil from degrading, which is what happened to the farmer.

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A force that destroys land and rock on the earth is known as A.)transformation. B.)erosion. C.)friction
ser-zykov [4K]

Answer:

The answer is B

Explanation:

6 0
3 years ago
Why are the Red sea and suez canal of strategic value in the region
Kisachek [45]
The Red Sea and the Suez Canal are of strategic value in the region because this is one of the most important transport points for oil in the entire world. Much of the oil that comes from the Persian Gulf travels through the Suez Canal on its way to Europe and the United States. Control and stability of this area is of vital importance to the United States and European governments and markets. 
3 0
3 years ago
What are three differences between brittle and plastic strain (may include both characteristics of the strain as well as the con
stich3 [128]

Answer:

elastic deformation: the rock returns to its original shape when the stress is removed.

plastic deformation: the rock does not return to its original shape when the stress is removed.

fracture: the rock breaks.

Explanation:

Stress is the force applied to an object. In geology, stress is the force per unit area that is placed on a rock. Four types of stresses act on materials.

A deeply buried rock is pushed down by the weight of all the material above it. Since the rock cannot move, it cannot deform. This is called confining stress.

Compression squeezes rocks together, causing rocks to fold or fracture (break) (figure 1). Compression is the most common stress at convergent plate boundaries.

Rocks that are pulled apart are under tension. Rocks under tension lengthen or break apart. Tension is the major type of stress at divergent plate boundaries.

When forces are parallel but moving in opposite directions, the stress is called shear (figure 2). Shear stress is the most common stress at transform plate boundaries.

Stress In Earth’s Crust

Enormous slabs of lithosphere move unevenly over the planet’s spherical surface, resulting in earthquakes. This chapter deals with two types of geological activity that occur because of plate tectonics: mountain building and earthquakes. First, we will consider what can happen to rocks when they are exposed to stress.

5 0
3 years ago
What happened to all of the heat Earth had when it formed?
ivann1987 [24]
It has been accreated and  developed in it's core  it is retianed
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Which of the systems below is not true about atmospheric circulation patterns
Olenka [21]

Atmospheric circulation patterns keep the temperature of an area constant.

so i believe that's right...

7 0
3 years ago
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