Soil and Agriculture by LegitSwag69

Where would contour farming and terraces be most likely to be found? a. on flat, expansive grasslands b. in wetlands c. on hilly, mountainous farm land d. near the coast Please select the best answer from the choices provided

C

Explain why the produce from tropical plantations are profitable to the local communities that grow them, but not as profitable as finished goods.

Tropical plantations provide a unique source of income for locals in many countries because they produce crops, such as cocoa, rubber and tea, desired around the world that can only be grown in tropical climates. However, the produce of these tropical plantations also tend to be simple raw materials that are merely the first step in a production process that yields more profitable products. While the communities do benefit from the production of the raw materials, there is greater profit in the production of finished goods.

Pastoral farming is best described as _______. a. a method of raising livestock and moving herds b. an African method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming Please select the best answer from the choices provided

A

Which of the following is not true concerning crop rotation? a. It reduces soil compaction by turning the soil. b. It grows different, dissimilar crops in series. c. It prevents the depletion of nutrients by any single crop variety. d. It improves soil structure and fertility. Please select the best answer from the choices provided

A

Which of the following is the most damaging method of soil remediation? a. soil excavation and disposal b. soil aeration c. heating and vapor extraction d. microbial digestion Please select the best answer from the choices provided

A

Which of the following is not true concerning tropical plantations? a. They are generally found in humid, tropical climates. b. Wheat and corn are common products of tropical plantations. c. Most crops from tropical plantations are exported. d. Cocoa, coffee and tea are common products of tropical plantations. Please select the best answer from the choices provided

B

Explain the difference between selective breeding and genetic engineering in the development of food crops with desirable traits.

Both genetic engineering and selective breeding aim to develop crops with desirable traits, but with selective breeding only traits that are natively found in the genome of the species can be isolated and expressed. With genetic engineering the desired genes can be directly manipulated or inserted into the DNA of the organism, so the potential list of insertions is not limited to those natively found in the organism.

The main target when controlling the acidity of soils is ______. a. neutralizing the pH b. adding base c. replacing lost cation nutrients d. eliminating humic acids Please select the best answer from the choices provided

C

Which of the following are characteristic of American agriculture? a. high productivity on limited cultivable land b. a large percentage of the population engage in agriculture c. high levels of productivity and mechanization d. low levels of land per farmer and productivity per hectare Please select the best answer from the choices provided

C

Crop rotation is a method of soil conservation because _______. a. the land produces more than one type of crop b. it requires plowing and tilling that reduces soil compaction c. it does not use the same parcel of land in sequential seasons d. it avoids the depletion of soil nutrients Please select the best answer from the choices provided

D

Which of the following are some reasons for the variations in agricultural practices around the world? a. topography b. tradition c. amount of rainfall d. all of the above Please select the best answer from the choices provided

D

Which of the following is not a method for addressing soil contamination? a. Excavate and dispose of the soil. b. Use microbes to digest the contaminants. c. Use heat to force the contaminants into the gas phase and out of the soil. d. None of the above Please select the best answer from the choices provided

D

Which of the following is not an agricultural technique? a. irrigation b. selective breeding c. livestock herding d. none of the above Please select the best answer from the choices provided

D

Which of the following is true concerning pastoralism? a. It occurs in small areas of land with high yields. b. It occurs in forests and grasslands. c. It is a modern agricultural technique. d. It revolves around herding livestock. Please select the best answer from the choices provided

D

Explain how Dutch agriculture uses technology to fully control the growing environment of crops.

Dutch agriculture is characterized by the growth of plants and crops in greenhouses. In greenhouses all aspects of growth can be artificially controlled, including the artificial imposition of climatic conditions and artificial growth patterns (i.e. hydroponics) and even the mechanical automation of farming.

The shrubs and trees in windbreaks protect soil from erosion by rain water. Please select the best answer from the choices provided

F

The high productivity of American agriculture is exemplified by _______. a. low crop yields per farm worker b. high crop yields per farm worker c. the small cultivated area per inhabitant d. the small cultivated area per farmer Please select the best answer from the choices provided

NOT A

How does flooding rice fields reduce the need for herbicides and pesticides in rice farming? a. While rice has a submerged growth state, most weeds and pests do not. b. Flooding the fields causes the soil to degrade so weeds cannot take root. c. Residual herbicides and pesticides from previous seasons dissolve in the water. d. All of the above Please select the best answer from the choices provided

NOT C

What is the purpose of strip cropping? a. prevent soil erosion b. maintain nutrient levels c. reduce plant disease d. all of the above Please select the best answer from the choices provided

NOT D

Which of the following best explains why soil conservation is important to human agriculture? a. Erosion prevention prevents millions of dollars in damage from mudslides. b. It is easier to prevent the degradation of old soil than it is to generate new soil. c. If the soil salinity gets too high crops will not be able to grow in it. d. Soil contamination is a hazard to human and animal health. Please select the best answer from the choices provided

NOT D

Explain why conservation is the most important strategy in the soil management programs of agriculture.

Pedogenesis, the formation of new soil, is a slow process that can take hundreds or thousands of years to complete. Human agriculture, meanwhile, relies upon using the same parcel of land for agriculture year after year, either for crops or livestock. Therefore it is easier to prevent the degradation of the old soil than it is to go through the process of generating new soil.

Explain how flooding rice fields reduces the need for herbicides and pesticides in rice farming.

Rice has a submerged growth state while most weeds do not. Therefore, flooding rice fields reduces the growth of these less robust pests without negatively affecting the rice crop. Flooding the fields also deters many kinds of vermin that would otherwise live in the soil and harm the rice plants because they cannot breathe underwater.

Contour farming is a method for plowing across the slope of steep hills. Please select the best answer from the choices provided

T

Victory gardens were used in World Wars I and II to augment the public food supply and aid the war effort. Please select the best answer from the choices provided

T

F

The same agricultural practices are used in every country of the world. Please select the best answer from the choices provided